Casio fx-991ZA PLUS Owner's Manual

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fx-991ZA PLUS

User’s Guide

CASIO Worldwide Education Website

http://edu.casio.com

Contents

Important Information ............................................................. 2

Sample Operations .................................................................. 2

Initializing the Calculator ........................................................ 2

Safety Precautions .................................................................. 2

Handling Precautions .............................................................. 2

Removing the Hard Case ........................................................ 3

Turning Power On and Off ...................................................... 3

Adjusting Display Contrast .................................................... 3

Key Markings ........................................................................... 3

Reading the Display ................................................................ 4

Using Menus ............................................................................ 5

Specifying the Calculation Mode .......................................... 5

Configuring the Calculator Setup .......................................... 5

Inputting Expressions and Values ......................................... 7

Toggling Calculation Results ............................................... 10

Basic Calculations ................................................................. 11

Prime Factorization ............................................................... 15

Function Calculations ........................................................... 15

Complex Number Calculations (CMPLX) ........................... 20

Using CALC ............................................................................ 21

Using SOLVE .......................................................................... 22

Statistical Calculations (STAT) ............................................. 24

Base-

Equation Calculations (EQN) ............................................... 30

Matrix Calculations (MATRIX) ............................................... 32

Creating a Number Table from Two Functions (TABLE) .... 35

Vector Calculations (VECTOR) ............................................. 36

Distribution Calculations (DIST) .......................................... 39

Scientific Constants .............................................................. 42

Metric Conversion ................................................................. 43

Calculation Ranges, Number of Digits, and Precision ....... 44

n Calculations (BASE-N) ............................................. 28

Errors ...................................................................................... 46

Before Assuming Malfunction of the Calculator... ............. 48

Replacing the Battery ............................................................ 48

Specifications ........................................................................ 49

Frequently Asked Questions ................................................ 49

EN-1

Important Information

• The displays and illustrations (such as key markings) shown in this User’s Guide are for illustrative purposes only, and may differ somewhat from the actual items they represent.

• The contents of this manual are subject to change without notice.

• In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of this product and items that come with it. Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of any kind whatsoever by any other party arising out of the use of this product and the items that come with it.

• Be sure to keep all user documentation handy for future reference.

Sample Operations

Sample operations in this manual are indicated by a icon. Unless specifically stated, all sample operations assume that the calculator is in its initial default setup. Use the procedure under “Initializing the Calculator” to return the calculator to its initial default setup.

For information about the B, b, v, and V marks that are shown in the sample operations, see “Configuring the Calculator Setup”.

Initializing the Calculator

Perform the following procedure when you want to initialize the calculator and return the calculation mode and setup to their initial default settings. Note that this operation also clears all data currently in calculator memory.

!9(CLR)3(All)=(Yes)

Safety Precautions

Battery

• Keep batteries out of the reach of small children.

• Use only the type of battery specified for this calculator in this manual.

Handling Precautions

• Even if the calculator is operating normally, replace the battery at least once every three years (LR44 (GPA76)).

A dead battery can leak, causing damage to and malfunction of the

calculator. Never leave a dead battery in the calculator. Do not try using the calculator while the battery is completely dead.

• The battery that comes with the calculator discharges slightly during

shipment and storage. Because of this, it may require replacement sooner than the normal expected battery life.

• Do not use an oxyride battery* or any other type of nickel-based primary battery with this product. Incompatibility between such batteries and product specifications can result in shorter battery life and product malfunction.

• Avoid use and storage of the calculator in areas subjected to temperature extremes, and large amounts of humidity and dust.

• Do not subject the calculator to excessive impact, pressure, or bending.

EN-2

• Never try to take the calculator apart.

• Use a soft, dry cloth to clean the exterior of the calculator.

• Whenever discarding the calculator or batteries, be sure to do so in accordance with the laws and regulations in your particular area.

* Company and product names used in this manual may be registered

trademarks or trademarks of their respective owners.

Removing the Hard Case

Before using the calculator, slide its hard case downwards to remove it, and then affix the hard case to the back of the calculator as shown in the illustration nearby.

Turning Power On and Off

Press O to turn on the calculator. Press 1A(OFF) to turn off the calculator.

Auto Power Off

The calculator also will turn off automatically after approximately 10 minutes or approximately 60 minutes of non-use. See “Configuring the Calculator Setup” for details. If this happens, press the O key to turn the calculator back on.

Adjusting Display Contrast

Display the CONTRAST screen by performing the following key operation: 1N(SETUP)c8(]CONT' ). Next, use d and e to adjust contrast. After the setting is the way you want, press A.

Important: If adjusting display contrast does not improve display readability, it probably means that battery power is low. Replace the battery.

Key Markings

Alternate function

Pressing the 1 or S key followed by a second key performs the alternate function of the second key. The alternate function is indicated by the text printed above the key. The following shows what the different colors of the alternate function key text mean.

Alternate function

–1

sin

Keycap function

If key marking text is this color:

Yellow

Red

Purple (or enclosed in purple brackets)

Green (or enclosed in green brackets)

It means this:

Press 1 and then the key to access the applicable function.

Press S and then the key to input the applicable variable, constant, or symbol.

Enter the CMPLX Mode to access the function.

Enter the BASE-N Mode to access the function.

EN-3

Reading the Display

The display of the calculator shows expressions you input, calculation results, and various indicators.

Input expression Indicators

Math

Calculation result

• If a ' indicator appears on the right side of the calculation result, it means the displayed calculation result continues to the right. Use e and d to scroll the calculation result display.

• If a g indicator appears on the right side of the input expression, it means the displayed calculation continues to the right. Use e and d to scroll the input expression display. Note that if you want to scroll the input expression while both the ' and g indicators are displayed, you will need to press A first and then use e and d to scroll.

Display indicators

Math

This indicator:

STO

RCL

STAT

CMPLX

MAT

Means this:

The keypad has been shifted by pressing the 1 key. The keypad will unshift and this indicator will disappear when you press a key.

The alpha input mode has been entered by pressing the S key. The alpha input mode will be exited and this indicator will disappear when you press a key.

There is a value stored in independent memory.

The calculator is standing by for input of a variable name to assign a value to the variable. This indicator appears after you press 1t(STO).

The calculator is standing by for input of a variable name to recall the variable’s value. This indicator appears after you press t.

The calculator is in the STAT Mode.

The calculator is in the CMPLX Mode.

The calculator is in the MATRIX Mode.

VCT

FIX

SCI

Math

The calculator is in the VECTOR Mode.

The default angle unit is degrees.

The default angle unit is radians.

The default angle unit is grads.

A fixed number of decimal places is in effect.

A fixed number of significant digits is in effect.

Natural Display is selected as the display format.

Calculation history memory data is available and can be replayed, or there is more data above/below the current screen.

EN-4

Disp

Important: For some type of calculation that takes a long time to execute,

the display may show only the above indicators (without any value) while it performs the calculation internally.

The display currently shows an intermediate result of a multi-statement calculation.

Using Menus

Some of the calculator’s operations are performed using menus. Pressing N or w, for example, will display a menu of applicable functions. The following are the operations you should use to navigate between menus.

• You can select a menu item by pressing the number key that corresponds to the number to its left on the menu screen.

• The $ indicator in the upper right corner of a menu means there is another menu below the current one. The ` indicator means another menu above. Use c and f to switch between menus.

• To close a menu without selecting anything, press A.

Specifying the Calculation Mode

When you want to perform this type of operation:

General calculations

Complex number calculations

Statistical and regression calculations

Calculations involving specific number systems (binary, octal, decimal, hexadecimal)

Equation solution

Matrix calculations

Generate a number table based on one or two functions

Vector calculations

Distribution Calculations

Note: The initial default calculation mode is the COMP Mode.

Perform this key operation:

N1(COMP) N2(CMPLX) N3(STAT)

N4(BASE-N)

N5(EQN) N6(MATRIX)

N7(TABLE)

N8(VECTOR) Nc1(DIST)

Configuring the Calculator Setup

First perform the following key operation to display the setup menu: 1N(SETUP). Next, use c and f and the number keys to configure the settings you want. Underlined ( ___ ) settings are initial defaults.

1MthIO 2LineIO Specifies the display format. Natural Display (MthIO) causes fractions,

irrational numbers, and other expressions to be displayed as they are written on paper.

MathMath

EN-5

MthIO: Selects MathO or LineO. MathO displays input and calculation results using the same format as they are written on paper. LineO displays input the same way as MathO, but calculation results are displayed in linear format.

Linear Display (LineIO) causes fractions and other expressions to be displayed in a single line.

Note: • The calculator switches to Linear Display automatically whenever you enter the STAT, BASE-N, MATRIX, or VECTOR Mode. • In this manual, the B symbol next to a sample operation indicates Natural Display (MathO), while the b symbol indicates Linear Display.

3Deg 4Rad 5Gra Specifies degrees, radians or grads as the angle unit for value input and calculation result display.

Note: In this manual, the v symbol next to a sample operation indicates degrees, while the V symbol indicates radians.

6Fix 7Sci 8Norm Specifies the number of digits for display of a calculation result. Fix: The value you specify (from 0 to 9) controls the number of decimal places for displayed calculation results. Calculation results are rounded off to the specified digit before being displayed.

Example: b 100 ÷ 7 = 14.286 (Fix 3)

14.29 (Fix 2)

Sci: The value you specify (from 1 to 10) controls the number of significant digits for displayed calculation results. Calculation results are rounded off to the specified digit before being displayed.

–1

Example: b 1 ÷ 7 = 1.4286 × 10

1.429 × 10

(Sci 5)

–1

(Sci 4)

Norm: Selecting one of the two available settings (Norm 1, Norm 2) determines the range in which results will be displayed in non-exponential format. Outside the specified range, results are displayed using exponential format. Norm 1: 10

–2

 |x|, |x|  1010 Norm 2: 10–9  |x|, |x|  10

Example: b 1 ÷ 200 = 5 × 10–3 (Norm 1)

0.005 (Norm 2)

c1ab/c c2 d/c Specifies either mixed fraction (ab/c) or improper fraction (d/c) for display of fractions in calculation results.

c3CMPLX 1a+b

a+bi) or polar coordinates (r∠) for EQN Mode solutions.

(

i ; 2r∠ Specifies either rectangular coordinates

c4STAT 1ON ; 2OFF Specifies whether or not to display a FREQ (frequency) column in the STAT Mode Stat Editor.

c5TABLE 1f(x) ; 2f(x),g(x) Specifies whether to use function only or the two functions

f(x) and g(x) in the TABLE Mode.

f(x)

c6Disp 1Dot ; 2Comma Specifies whether to display a dot or a comma for the calculation result decimal point. A dot is always displayed during input.

Note: When dot is selected as the decimal point, the separator for multiple results is a comma (,). When comma is selected, the separator is a semicolon (;).

EN-6

c7APO 110 Min. ; 260 Min. You can specify a trigger time of 10 minutes or 60 minutes for Auto Power Off.

c8] CONT' Adjusts display contrast. See “Adjusting Display Contrast” for details.

Initializing Calculator Settings

Perform the following procedure to initialize the calculator, which returns the calculation mode to COMP and returns all other settings, including setup menu settings, to their initial defaults.

19(CLR)1(Setup)=(Yes)

Inputting Expressions and Values

Basic Input Rules

Calculations can be input in the same form as they are written. When you press = the priority sequence of the input calculation will be evaluated automatically and the result will appear on the display.

4 × sin30 × (30 + 10 × 3) = 120 4 *s 30 )*( 30 + 10 * 3 )=

* *

MathMath

*1 Input of the closing parenthesis is required for sin, sinh, and other functions

that include parentheses.

These multiplication symbols (×) can be omitted. A multiplication symbol

can be omitted when it occurs immediately before an opening parenthesis, immediately before sin or other function that includes parentheses, immediately before the Ran# (random number) function, or immediately before a variable (A, B, C, D, E, F, M, X, Y), scientific constants, π or

The closing parenthesis immediately before the = operation can be

omitted.

Input example omitting ** example.

and )*3 operations in the above

MathMath

4 s 30 )( 30 + 10 * 3 =

Important: If you execute a calculation that includes both division and multiplication operations in which a multiplication sign has been omitted, parentheses will be inserted automatically as shown in the examples below.

• When a multiplication sign is omitted immediately before an open parenthesis or after a closed parenthesis.

6 ÷ 2 (1 + 2) p 6 ÷ (2 (1 + 2)) 6 ÷ A (1 + 2) p 6 ÷ (A (1 + 2)) 1 ÷ (2 + 3) sin(30) p 1 ÷ ((2 + 3) sin(30))

• When a multiplication sign is omitted immediately before a variable, a constant, etc.

6 ÷ 2π p 6 ÷ (2π)

2 ÷ 2'2 p 2 ÷ (2'2)

4π ÷ 2π p 4π ÷ (2π)

EN-7

• When inputting a function that uses commas (such as Pol, Rec, and RanInt#), be sure to input the closed parentheses required by the expression. If you do not input closed parentheses, parentheses may not be inserted automatically as described above.

Important: If you execute a calculation in which a multiplication sign has been omitted immediately before a fraction (including mixed fractions), parentheses will be inserted automatically as shown in the examples below.

2 ×

' 1 c 3 dddd 2

: B

MathMath

sin(30) ×

: B

MathMath

' 4 c 5 dddds 30 )

MathMath

Note: • If the calculation becomes longer than the screen width during input, the screen will scroll automatically to the right and the ] indicator will appear on the display. When this happens, you can scroll back to the left by using d and e to move the cursor. • When Linear Display is selected, pressing f will cause the cursor to jump to the beginning of the calculation, while c will jump to the end. • When Natural Display is selected, pressing e while the cursor is at the end of the input calculation will cause it to jump to the beginning, while pressing d while the cursor is at the beginning will cause it to jump to the end. • You can input up to 99 bytes for a calculation. Each numeral, symbol, or function normally uses one byte. Some functions require three to 13 bytes. • The cursor will change shape to k when there are 10 bytes or less of allowed input remaining. If this happens, end calculation input and then press =.

Calculation Priority Sequence

The priority sequence of input calculations is evaluated in accordance with the rules below. When the priority of two expressions is the same, the calculation is performed from left to right.

1st

2nd

3rd

4th

Parenthetical expressions

Functions that require an argument to the right and a closing parenthesis “)” following the argument.

Functions that come after the input value ( %, '

t), powers (x^), roots (")

, x3, x–1, x!, °’ ”, °, r, g,

Fractions

EN-8

5th

Negative sign (–), baseNote: When squaring a negative value (such as –2), the value being squared must be enclosed in parentheses ((- 2 )w =). Since inputting - 2 w= would result in the squaring of 2 and then appending a negative sign to the result. Always keep the priority sequence in mind, and enclose negative values in parentheses when required.

has a higher priority than the negative sign,

n symbols (d, h, b, o)

6th

7th Multiplication where the multiplication sign is omitted

8th

9th Dot product (·)

10th

11th Addition, subtraction (+, –)

12th Logical AND (and)

13th Logical OR, XOR, XNOR (or, xor, xnor)

Metric conversion commands (cm'in, etc.), STAT Mode estimated values (m, n, m

Permutation (nPr), combination (nCr), complex number polar coordinate symbol (∠)

Multiplication (×), division (÷)

, m2)

Inputting with Natural Display

Selecting Natural Display makes it possible to input and display fractions and

certain functions (log, as they are written in your textbook.

2 + '2 1 + '2

, x3, x^, ), #, ", x−1, 10^, e^, ∫ , d/dx, Σ, Abs) just

MathMath

' 2 +! 2 ee 1 +! 2 =

Important: • Certain types of expressions can cause the height of a calculation formula to be greater than one display line. The maximum allowable height of a calculation formula is two display screens (31 dots × 2). Further input will become impossible if the height of the calculation you are inputting exceeds the allowable limit. • Nesting of functions and parentheses is allowed. Further input will become impossible if you nest too many functions and/or parentheses. If this happens, divide the calculation into multiple parts and calculate each part separately.

Note: When you press = and obtain a calculation result using Natural Display, part of the expression you input may be cut off. If you need to view the entire input expression again, press A and then use d and e to scroll the input expression.

Using Values and Expressions as Arguments

(Natural Display only)

A value or an expression that you have already input can be used as the

argument of a function. After you have input it the argument of ', resulting in

, for example, you can make

EN-9

To input 1 +

1 + 7 ' 6

dddd1Y(INS)

As shown above, the value or expression to the right of the cursor after 1Y(INS) are pressed becomes the argument of the function that is specified next. The range encompassed as the argument is everything up to the first open parenthesis to the right, if there is one, or everything up to the first function to the right (sin(30), log2(4), etc.) This capability can be used with the following functions: ', &, 7,

17(F), 1&(8), 16("), 1l($), 1i(%), !, 6, 1!(#), 1w(Abs).

and then change it to 1 +

MathMath

Overwrite Input Mode (Linear Display only)

You can select either insert or overwrite as the input mode, but only while Linear Display is selected. In the overwrite mode, text you input replaces the text at the current cursor location. You can toggle between the insert and overwrite modes by performing the operations: 1Y(INS). The cursor appears as “

Note: Natural Display always uses the insert mode, so changing display format from Linear Display to Natural Display will automatically switch to the insert mode.

I” in the insert mode and as “ ” in the overwrite mode.

Correcting and Clearing an Expression

To delete a single character or function: Move the cursor so it is directly to

the right of the character or function you want to delete, and then press Y. In the overwrite mode, move the cursor so it is directly under the character or function you want to delete, and then press Y. To insert a character or function into a calculation: Use d and e to move the cursor to the location where you want to insert the character or function and then input it. Be sure always to use the insert mode if Linear Display is selected. To clear all of the calculation you are inputting: Press A.

Toggling Calculation Results

While Natural Display is selected, each press of f will toggle the currently displayed calculation result between its fraction form and decimal form, its ' form and decimal form, or its π form and decimal form.

π ÷ 6 =

15(π)/ 6 =

= 0.5235987756 B

1 6

0.5235987756

(

(! 2 e+ 2 )*! 3 =

+ 2) ×

6 + 2'3

= 5.913591358 B

6 + 2'3

5.913591358

EN-10

While Linear Display is selected, each press of f will toggle the currently displayed calculation result between its decimal form and fraction form.

1 ÷ 5 = 0.2 =

1 / 5 =

454

1 –

1 - 4 ' 5 =

Important: • Depending on the type of calculation result that is on the display when you press the f key, the conversion process may take some time to perform. • With certain calculation results, pressing the f key will not convert the displayed value. • You cannot switch from decimal form to mixed fraction form if the total number of digits used in the mixed fraction (including integer, numerator, denominator, and separator symbols) is greater than 10.

Note: With Natural Display (MathO), pressing 1= instead of = after inputting a calculation will display the calculation result in decimal form. Pressing f after that will switch to the fraction form or π form of the calculation result. The ' form of the result will not appear in this case.

= 0.2 b

0.2

1{5

0.2

Basic Calculations

Fraction Calculations

Note that the input method for fractions is different, depending upon whether you are using Natural Display or Linear Display.

2 + 1 = 7 3 2 6

or ' 2 c 3 e+' 1 c 2 =

b 2 ' 3 + 1 ' 2 = 7{6

4 − 3

b 4 - 3 ' 1 ' 2 = 1{2

Note: • Mixing fractions and decimal values in a calculation while Linear Display is selected will cause the result to be displayed as a decimal value.

• Fractions in calculation results are displayed after being reduced to their

lowest terms.

1 = 1 2 2

B 2 ' 3 e+ 1 ' 2 =

B 4 -1'(() 3 e 1 c 2 =

1 2

To switch a calculation result between improper fraction and mixed fraction form: Perform the following key operation: 1f(

To switch a calculation result between fraction and decimal form:

Press f.

)

Percent Calculations

Inputting a value and pressing 1((%) causes the input value to become a percent.

150 × 20% = 30 150 * 20 1((%)=

EN-11

Calculate what percentage of 880 is 660. (75%) 660 / 880 1((%)=

Increase 2500 by 15%. (2875) 2500 + 2500 * 15 1((%)=

Discount 3500 by 25%. (2625) 3500 - 3500 * 25 1((%)=

2875

2625

Degree, Minute, Second (Sexagesimal) Calculations

Performing an addition or subtraction operation between sexagesimal values, or a multiplication or division operation between a sexagesimal value and a decimal value will cause the result to be displayed as a sexagesimal value. You also can convert between sexagesimal and decimal. The following is the input format for a sexagesimal value: {degrees} $ {minutes} $ {seconds} $.

Note: You must always input something for the degrees and minutes, even if they are zero.

2°20´30˝ + 39´30˝ = 3°00´00˝ 2 $ 20 $ 30 $+ 0 $ 39 $ 30 $=

3°0´0˝

Convert 2°15´18˝ to its decimal equivalent. 2 $ 15 $ 18 $= (Converts sexagesimal to decimal.) $ 2.255 (Converts decimal to sexagesimal.) $ 2°15´18˝

2°15´18˝

Multi-Statements

You can use the colon character (:) to connect two or more expressions and execute them in sequence from left to right when you press =.

3 + 3 : 3 × 3 3 + 3 S7(:) 3 * 3 = = 9

Using Engineering Notation

A simple key operation transforms a displayed value to engineering notation.

Transform the value 1234 to engineering notation, shifting the decimal point to the right. 1234 =

W 1.234×10 W 1234×10

1234

Transform the value 123 to engineering notation, shifting the decimal point to the left. 123 =

1W(←) 0.123×10 1W(←) 0.000123×10

123

EN-12

Calculation History

In the COMP, CMPLX, or BASE-N Mode, you can scroll through calculation history contents using f and c.

1 + 1 = 2 1 + 1 = 2 + 2 = 4 2 + 2 = 4 3 + 3 = 6 3 + 3 = 6 (Scrolls back.) f 4 (Scrolls back again.) f 2

Note: Calculation history data is all cleared whenever you press O, when you change to a different calculation mode, when you change the display format, or whenever you perform any reset operation.

Replay

While a calculation result is on the display, you can press d or e to edit the expression you used for the previous calculation.

4 × 3 + 2.5 = 14.5 b 4 * 3 + 2.5 = 4 × 3 − 7.1 = 4.9 (Continuing) dYYYY- 7.1 = 4.9

Note: If you want to edit a calculation when the ' indicator is on the right side of a calculation result display (see “Reading the Display”), press A and then use d and e to scroll the calculation.

14.5

Answer Memory (Ans) /Previous Answer Memory (PreAns)

The last calculation result obtained is stored in Ans (answer) memory. The calculation result obtained prior to the last one is stored in PreAns (previous answer) memory. Displaying the result of a new calculation will move current Ans memory contents to PreAns memory and store the new calculation results in Ans memory. PreAns memory can be used only in the COMP Mode. PreAns memory contents are cleared whenever the calculator enters another mode from the COMP Mode.

To divide the result of 3 × 4 by 30 b

3 * 4 =

(Continuing) / 30 =

123 + 456 = 579 B

789 – 579 = 210 (Continuing) 789 -G=

123 + 456 =

EN-13

For T

k+2

k+1

= T

+ Tk (Fibonacci sequence), determine the sequence

from T1 to T5. Note however, that T

= 1 and T

= 1. B

(Ans = T

= 1 1 =

= T2 + T

= 1 + 1

= 1, PreAns = T

G+SG(PreAns)=

(Ans = T

= T3 + T

= T4 + T

= 2 + 1 =

= 3 + 2 =

= 2, PreAns = T

= 3, PreAns = T

= 1)

= 2)

Result: The sequence is {1, 1, 2, 3, 5}.

Variables (A, B, C, D, E, F, X, Y)

Your calculator has eight preset variables named A, B, C, D, E, F, X, and Y. You can assign values to variables and also use the variables in calculations.

To assign the result of 3 + 5 to variable A 3 + 5 1t(STO)y(A)

To multiply the contents of variable A by 10 (Continuing) Sy(A)* 10 =

To recall the contents of variable A (Continuing) ty(A) 8

To clear the contents of variable A 0 1t(STO)y(A) 0

Independent Memory (M)

You can add calculation results to or subtract results from independent memory. The “M” appears on the display when there is any value other than zero stored in independent memory.

To clear the contents of M 0 1t(STO)l(M)

To add the result of 10 × 5 to M (Continuing) 10 * 5 l 50

EN-14

To subtract the result of 10 + 5 from M

(Continuing) 10 + 5 1l(M–)

To recall the contents of M (Continuing) tl(M) 35

Note: Variable M is used for independent memory.

Clearing the Contents of All Memories

Ans memory, independent memory, and variable contents are retained even if you press A, change the calculation mode, or turn off the calculator. PreAns memory contents are retained even if you press A and turn off the calculator without exiting the COMP Mode. Perform the following procedure when you want to clear the contents of all memories.

!9(CLR)2(Memory)=(Yes)

Prime Factorization

In the COMP Mode, you can factor a positive integer up to 10 digits into prime factors up to three digits.

To perform prime factorization on 1014 1014 =

!e(FACT)

When you perform prime factorization on a value that includes a factor that is prime number with more than three digits, the part that cannot be factored will be enclosed in parentheses on the display.

To perform prime factorization on 4104676 (= 2

4104676 =!e(FACT)

Any one of the following operations will exit prime factorization result display.

• Pressing !e(FACT) or =.

• Pressing any of the following keys: . or e.

• Using the setup menu to change the angle unit setting (Deg, Rad, Gra) or the display digits setting (Fix, Sci, Norm).

Note: • You will not be able to execute prime factorization while a decimal value, fraction, or negative value calculation result is displayed. Trying to do so will cause a math error (Math ERROR). • You will not be able to execute prime factorization while the result of a calculation that uses Pol, Rec is displayed.

× 10132)

Function Calculations

For actual operations using each function, see the “Examples” section following the list below.

: π is displayed as 3.141592654, but π = 3.14159265358980 is used for

internal calculations.

e : e is displayed as 2.718281828, but e = 2.71828182845904 is used for

internal calculations.

EN-15

sin, cos, tan, sin−1, cos−1, tan

∫

angle unit before performing calculations. See

sinh, cosh, tanh, sinh

−1

, cosh−1, tanh

−1

: Trigonometric functions. Specify the

−1

: Hyperbolic functions. Input a

function from the menu that appears when you press w. The angle unit setting does not affect calculations. See

r, g

°,

: These functions specify the angle unit. ° specifies degrees, r radians,

grads. Input a function from the menu that appears when you perform

and the following key operation: 1G(DRG'). See

$, %

: Exponential functions. Note that the input method is different

depending upon whether you are using Natural Display or Linear Display. See

log

10 is the default setting if you do not input anything for

: Logarithmic function. Use the l key to input logab as log (a, b). Base

a. The & key also

can be used for input, but only while Natural Display is selected. In this case, you must input a value for the base. See

: Natural logarithm to base e. See

, x3, x^, ), #, ", x

that the input methods for

−1

: Powers, power roots, and reciprocals. Note

x^, ), #, and " are different depending upon

whether you are using Natural Display or Linear Display. See

: Function for performing numerical integration using the Gauss-Kronrod

f(x)

method. Natural Display input syntax is

syntax is

–5

when nothing is input for tol. Also see “Integration and Differential

( f(x)

, a, b, tol). tol specifies tolerance, which becomes 1 ×

∫

, while Linear Display input

Calculation Precautions” and “Tips for Successful Integration Calculations” for more information. See

F: Function for approximation of the derivative based on the central

difference method. Natural Display input syntax is

Linear Display input syntax is which becomes 1 × 10

–10

when nothing is input for tol. Also see “Integration

( f(x)

, a, tol). tol specifies tolerance,

and Differential Calculation Precautions” for more information. See 9.

8: Function that, for a specified range of f(x), determines sum

f(a) + f(a+1) + f(a+2) + ...+ f(b). Natural Display input syntax is

while Linear Display input syntax is Σ( can be specified within the range of –1 × 10

f(x), a, b). a and b are integers that

 a  b  1 × 1010. See

( f(x))



, while

( f(x))

Note: The following cannot be used in f(x): Pol, Rec. The following cannot be used in

f(x), a, or b: ∫, d/dx, Σ.

EN-16

Pol, Rec : Pol converts rectangular coordinates to polar coordinates, while Rec converts polar coordinates to rectangular coordinates. See

Pol(

x, y) = (r, ) Rec(r, ) = (x, y)

Rectangular Coordinates (Rec)

x ! : Factorial function. See

Abs : Absolute value function. Note that the input method is different

depending upon whether you are using Natural Display or Linear Display. See

Ran# : Generates a 3-digit pseudo random number that is less than 1. The result is displayed as a fraction when Natural Display is selected. See

RanInt# : For input of the function of the form RanInt#( a random integer within the range of

Polar Coordinates (Pol)

a to b. See

nPr, nCr : Permutation (nPr) and combination (nCr) functions. See

Specify the angle unit before performing calculations.

The calculation result for and for respectively to variables X and Y. Calculation result in the range of −180°  180°.

x and y are each assigned

r and 

is displayed



a, b), which generates

Rnd : The argument of this function is made a decimal value and then rounded

in accordance with the current number of display digits setting (Norm, Fix, or Sci). With Norm 1 or Norm 2, the argument is rounded off to 10 digits. With Fix and Sci, the argument is rounded off to the specified digit. When Fix 3 is the display digits setting, for example, the result of 10 ÷ 3 is displayed as 3.333, while the calculator maintains a value of 3.33333333333333 (15 digits) internally for calculation. In the case of Rnd(10÷3) = 3.333 (with Fix

3), both the displayed value and the calculator’s internal value become

3.333. Because of this a series of calculations will produce different results

depending on whether Rnd is used (Rnd(10÷3) × 3 = 9.999) or not used (10 ÷ 3 × 3 = 10.000). See

Note: Using functions can slow down a calculation, which may delay display of the result. Do not perform any subsequent operation while waiting for the calculation result to appear. To interrupt an ongoing calculation before its result appears, press A.

Integration and Differential Calculation Precautions

• Integration and differential calculations can be performed in the COMP Mode (,1) only.

• The following cannot be used in used in

• When using a trigonometric function in unit.

• A smaller time. When specifying

f(x), a, b, or tol: ∫, d/dx, Σ.

tol value increases precision, but it also increases calculation

tol, use value that is 1 × 10

f(x): Pol, Rec. The following cannot be

f(x), specify Rad as the angle

–14

or greater.

Precautions for Integration Calculation Only

• Integration normally requires considerable time to perform.

• Depending on the content of error that exceeds the tolerance may be generated, causing the calculator to display an error message.

f(x) and the region of integration, calculation

EN-17

Precautions for Differential Calculation Only

• If convergence to a solution cannot be found when

tol input is omitted, the

tol value will be adjusted automatically to determine the solution.

• Non-consecutive points, abrupt fluctuation, extremely large or small points, inflection points, and the inclusion of points that cannot be differentiated, or a differential point or differential calculation result that approaches zero can cause poor precision or error.

Tips for Successful Integration Calculations

When a periodic function or integration interval results in positive and negative

Perform separate integrations for each cycle, or for the positive part and the negative part, and then combine the results.

When integration values fluctuate widely due to minute shifts in the integration interval

Divide the integration interval into multiple parts (in a way that breaks areas of wide fluctuation into small parts), perform integration on each part, and then combine the results.

f (x)

f(x) function values

S Positive

S Negative

x1x2x3x

f(x)dx =

∫∫

f(x)dx =

∫∫∫

f(x)dx

∫

f(x)dx +

Positive Part

(S Positive)

f(x)dx +

f(x)dx

∫

Negative Part

(S Negative)

f(x)dx +

.....

Examples

sin 30°= 0.5 bv s 30 )= 0.5

sin−10.5 = 30° bv 1s(sin−1) 0.5 )= 30

sinh 1 = 1.175201194 wb(sinh) 1 )= 1.175201194

cosh–1 1 = 0 wf(cosh−1) 1 )= 0

π /2 radians = 90°, 50 grads = 45° v

(15(π)/ 2 )1G(DRG')c( 50 1G(DRG')d(g)= 45

To calculate e5 × 2 to three significant digits (Sci 3)

1N(SETUP)7(Sci)3 B 1i(%) 5 e* 2 = b 1i(%) 5 )* 2 = 2.97×10

log101000 = log 1000 = 3 l 1000 )= 3

)= 90

2.97×10

log216 = 4 l 2 1)(,) 16 )= 4 B & 2 e 16 = 4

EN-18

To calculate ln 90 (= loge 90) to three significant digits (Sci 3)

1N(SETUP)7(Sci)3 i 90 )=

1.2 × 103 = 1200 B 1.2 * 10 6 3 = 1200

(1+1)

(52)3 = 15625 ( 5 x)1w(x3)= 15625

b 516(") 32 )= 2

2+2

= 16 B ( 1 + 1 )6 2 + 2 = 16

= 2 B 16(") 5 e 32 = 2

4.50×10

To calculate places (Fix 3)

1N(SETUP)6(Fix)3 B ! 2 e* 3 = 1= 4.243 b ! 2 )* 3 = 4.243

B 7iS)(X))e 1 eS5( b 7iS)(X))1)(,) 1 1)(,)S5(

To obtain the derivative at point x = π/2 for the function y = sin(x)

B 17(F)sS)(X)) e'15(π)e 2 = b 17(F)sS)(X))

1)(,)15(π)' 2 )=

1010

ln(x)dx = 1

∫

(x + 1) = 20

2 × 3

(= 3

= 4.242640687...) to three decimal

e)= 1

e))= 1

B 1&(8)S)(X)+ 1 e 1 e 5 = b 1&(8)S)(X)+ 1 1)(,) 1

1)(,) 5 )=

To convert rectangular coordinates (

1111

B 1+(Pol)! 2 e1)(,)! 2 e)= b 1+(Pol)! 2 )1)(,)! 2 ))= r= 2

) to polar coordinates

r=2,=45

= 45

To convert polar coordinates (

B 1-(Rec)! 2 e1)(,) 45 )=

1212

(5 + 3) ! = 40320 ( 5 + 3 )1E(x!)= 40320

, 45°) to rectangular coordinates

X=1, Y=1

EN-19

|2 – 7| × 2 = 10

1313

B 1w(Abs) 2 - 7 e* 2 = b 1w(Abs) 2 - 7 )* 2 = 10

To obtain three random three-digit integers

1414

1000 1.(Ran#)= = 48 = 117

(Results shown here are for illustrative purposes only. Actual results will differ.)

To generate random integers in the range of 1 to 6

1515

S.(RanInt) 1 1)(,) 6 )= = 6 = 1

(Results shown here are for illustrative purposes only. Actual results will differ.)

To determine the number of permutations and combinations

1616

possible when selecting four people from a group of 10

Permutations: 10 1*(nPr) 4 = Combinations: 10 1/(nCr) 4 = 210

To perform the following calculations when Fix 3 is selected for the

1717

number of display digits: 10 ÷ 3 × 3 and Rnd(10 ÷ 3) × 3 b

459

5040

1N(SETUP)6(Fix)3 10 / 3 * 3 = 10(Rnd) 10 / 3 )* 3 = 9.999

10.000

Complex Number Calculations (CMPLX)

To perform complex number calculations, first press N2(CMPLX) to

a+bi)

enter the CMPLX Mode. You can use either rectangular coordinates ( or polar coordinates ( calculation results are displayed in accordance with the complex number format setting on the setup menu.

(2 + 6 ( 2 + 6 W(

2 ∠ 45 = 2 1-(∠) 45 =

! 2 e+! 2 eW(

i) ÷ (2i) = 3 – i (Complex number format: a + bi)

i = 2 ∠ 45 Bv (Complex number format: r∠)

r∠) to input complex numbers. Complex number

i))/( 2 W(i))= 3–i

i Bv (Complex number format: a + bi)

i)= 2∠45

Note: • If you are planning to perform input and display of the calculation

result in polar coordinate format, specify the angle unit before starting the calculation. • The of –180°  is selected will show

  180°. • Display of the calculation result while Linear Display

 value of the calculation result is displayed in the range

a and bi (or r and ) on separate lines.

EN-20

CMPLX Mode Calculation Examples

(1 – i)–1 = ( 1 -W(

121

B (Complex number format: a + bi)

i))E=

121

(1 + i)4 + (1 – i)2 = – 4 – 2i B ( 1 +W(

To obtain the conjugate complex number of 2 + 3i (Complex number

format:

12(CMPLX)2(Conjg) 2 + 3 W(

To obtain the absolute value and argument of 1 + i Bv Absolute Value: 1w(Abs) 1 +W( Argument: 12(CMPLX)1(arg)1+W(i))= 45

i))6 4 e+( 1 -W(i))w= –4–2i

a + bi)

i))= 2–3i

i)=

Using a Command to Specify the Calculation Result Format

Either of two special commands ('r∠ or 'a+bi) can be input at the end of a calculation to specify the display format of the calculation results. The command overrides the calculator’s complex number format setting.

! 2 e+! 2 eW( 2 1-(∠) 45 12(CMPLX)4('a+bi)=

i = 2 ∠ 45, 2 ∠ 45 =

i)12(CMPLX)3('r∠)= 2∠45

i Bv

Using CALC

CALC lets you save calculation expressions that contain variables, which you can then recall and execute in the COMP Mode (N1) and the CMPLX Mode (N2). The following describes the types of expressions you can save with CALC.

• Expressions: 2X + 3Y, 2AX + 3BY + C, A + B

• Multi-statements: X + Y : X (X + Y)

• Equalities with a single variable on the left and an expression including variables on the right: A = B + C, Y = X

(Use Ss(=) to input the equals sign of the equality.)

To store 3A + B and then substitute the following values to perform

the calculation: (A, B) = (5, 10), (7, 20)

+ X + 3

MathMath

3 S-(A)+Se(B)

MathMath

Prompts for input of a value for A Current value of A

EN-21

5 = 10 =

s (or =)

7 = 20 =

To exit CALC: A

MathMath

To store A + B

i and then determine

+ i, 1 +

i using polar

coordinates (r∠) v

Math

N2(CMPLX) S-(A)+Se(B)W( 12(CMPLX)3('

r∠)

CMPLX

Math

s! 3 )= 1 =

s (or =) 1 =! 3 )=

To exit CALC: A

Note: During the time from when you press s until you exit CALC by pressing A, you should use Linear Display input procedures for input.

Using SOLVE

SOLVE uses Newton’s Law to approximate the solution of equations. Note that SOLVE can be used in the COMP Mode (N1) only. The following describes the types of equations whose solutions can be obtained using SOLVE.

• Equations that include variable X: X + 3 = B + C

SOLVE solves for X. An expression like X

– 2 = 0.

• Equations input using the following syntax: {equation}, {solution

variable}

SOLVE solves for Y, for example, when an equation is input as: Y = X + 5,

Important: • If an equation contains input functions that include an open parenthesis (such as sin and log), do not omit the closing parenthesis.

• The following functions are not allowed inside of an equation: ∫,

Pol, Rec.

+ 2X – 2, Y = X + 5, X = sin(M), X

+ 2X – 2 is treated as X2 + 2X

d/dx, Σ,

EN-22

To solve y = ax2 + b for x when y = 0, a = 1, and b = –2

MathMath

Sf(Y)Ss(=)S-(A) S)(X)w+Se(B)

MathMath

1s(SOLVE)

Prompts for input of a value for Y Current value of Y

MathMath

0 = 1 =- 2 =

Current value of X

MathMath

Input an initial value for X (Here, input 1): 1 =

To exit SOLVE: A

Solution screen

Note: During the time from when you press 1s(SOLVE) until you exit SOLVE by pressing A, you should use Linear Display input procedures for input.

Important: • Depending on what you input for the initial value for X (solution variable), SOLVE may not be able to obtain solutions. If this happens, try changing the initial value so they are closer to the solution. • SOLVE may not be able to determine the correct solution, even when one exists. • SOLVE uses Newton’s Law, so even if there are multiple solutions, only one of them will be returned. • Due to limitations in Newton’s Law, solutions tend to be difficult to obtain for equations like the following:

y = sin(x), y = e

, y =

Solution Screen Contents

Solutions are always displayed in decimal form.

Equation (The equation you input.)

MathMath

Variable solved for Solution

(Left Side) – (Right Side) result

“(Left Side) – (Right Side) result” shows the result when the right side of the equation is subtracted from the left side, after assigning the obtained value to the variable being solved for. The closer this result is to zero, the higher the accuracy of the solution.

EN-23

Continue Screen

SOLVE performs convergence a preset number of times. If it cannot find a solution, it displays a confirmation screen that shows “Continue: [=]”, asking if you want to continue. Press = to continue or A to cancel the SOLVE operation.

y = x

To solve

Sf(Y)Ss(=) S)(X)w-S)(X)+ 1

1s(SOLVE)

3 =

– x + 1 for x when y = 3, 7, and 13

MathMath

Input an initial value for X (Here, input 1): 1 =

MathMath

= 7 ==

MathMath

= 13 ==

Statistical Calculations (STAT)

To start a statistical calculation, perform the key operation N3(STAT) to enter the STAT Mode and then use the screen that appears to select the type of calculation you want to perform.

To select this type of statistical calculation:

(Regression formula shown in parentheses)

Press this key:

Single-variable (X)

Paired-variable (X, Y), linear regression (

y = A + Bx)

Paired-variable (X, Y), quadratic regression

( y = A + Bx + Cx2)

Paired-variable (X, Y), logarithmic regression

( y = A + Blnx)

Paired-variable (X, Y),

e exponential regression

y = Ae

(

EN-24

1(1-VAR)

2(A+BX)

3( _+CX

4(ln X)

B x

)

e^X)

)

Paired-variable (X, Y), ab exponential regression

y = AB

(

)

6(A

•B^X)

Paired-variable (X, Y), power regression (

Paired-variable (X, Y), inverse regression

y = A + B/x)

(

y = Ax

)

7(A

8(1/X)

•X^B)

Pressing any of the above keys (1 to 8) displays the Stat Editor. Note: When you want to change the calculation type after entering the STAT

Mode, perform the key operation 11(STAT/DIST)1(Type) to display the calculation type selection screen.

Inputting Data

Use the Stat Editor to input data. Perform the following key operation to display the Stat Editor: 11(STAT/DIST)2(Data). The Stat Editor provides 40 rows for data input when there is an X column only or when there are X and Y columns, 20 rows when there are X and FREQ columns, or 26 rows when there are X, Y, and FREQ columns.

Note: Use the FREQ (frequency) column to input the quantity (frequency) of identical data items. Display of the FREQ column can be turned on (displayed) or off (not displayed) using the Stat Format setting on the setup menu.

To select linear regression and input the following data:

(170, 66), (173, 68), (179, 75)

STATSTAT

N3(STAT)2(A+BX)

STATSTAT

170 = 173 = 179 =ce

STATSTAT

66 = 68 = 75 =

Important: • All data currently input in the Stat Editor is deleted whenever you exit the STAT Mode, switch between the single-variable and a paired- variable statistical calculation type, or change the Stat Format setting on the setup menu. • The following operations are not supported by the Stat Editor: m, 1m(M–), 1t(STO). Pol, Rec, and multi-statements also cannot be input with the Stat Editor.

To change the data in a cell: In the Stat Editor, move the cursor to the cell that contains the data you want to change, input the new data, and then press =. To delete a line: In the Stat Editor, move the cursor to the line that you want to delete and then press Y. To insert a line: In the Stat Editor, move the cursor to the location where you want to insert the line and then perform the following key operation: 11(STAT/DIST)3(Edit)1(Ins).

To delete all Stat Editor contents: In the Stat Editor, perform the following key operation: 11(STAT/DIST)3(Edit)2(Del-A).

EN-25

Obtaining Statistical Values from Input Data

To obtain statistical values, press A while in the Stat Editor and then

x, Σx

recall the statistical variable (σ variables and the keys you should press to recall them are shown below. For single-variable statistical calculations, the variables marked with an asterisk (*) are available.

Sum: Σ

*, Σx*, Σy2, Σy, Σxy, Σx3, Σx

11(STAT/DIST) 3(Sum) 1 to 8 Number of Items:

y, Sample Standard Deviation: sx*, sy

n*, Mean: o*, p, Population Standard Deviation: σx*,

11(STAT/DIST) 4(Var) 1 to 7

Regression Coefficients: A, B, Correlation Coefficient: Values:

m, n

11(STAT/DIST) 5(Reg) 1 to 5

Regression Coefficients for Quadratic Regression: A, B, C, Estimated

Values:

, m2, n

11(STAT/DIST) 5(Reg) 1 to 6

• See the table at the beginning of this section of the manual for the regression formulas.

m, m

•

, m2 and n are not variables. They are commands of the type that take

an argument immediately before them. See “Calculating Estimated Values” for more information.

, etc.) you want. Supported statistical

y, Σx

r, Estimated

Minimum Value: minX*, minY, Maximum Value: maxX*, maxY

11(STAT/DIST) 6(MinMax) 1 to 2 (When the single-variable statistical calculation is selected.) 11(STAT/DIST) 6(MinMax) 1 to 4 (When a paired-variable statistical calculation is selected.) First Quartile: Q1, Median: med, Third Quartile: Q3 11(STAT/DIST) 6(MinMax) 3 to 5 (When the single-variable statistical calculation is selected.) Note: While single-variable statistical calculation is selected, you can input

the functions and commands for performing normal distribution calculation from the menu that appears when you perform the following key operation: 11 (STAT/DIST) 5 (Distr). See “Performing Normal Distribution Calculations” for details.

To input the single-variable data

x = {1, 2, 2, 3, 3, 3, 4, 4, 5}, using

the FREQ column to specify the number of repeats for each items ({xn; freqn} = {1;1, 2;2, 3;3, 4;2, 5;1}), and calculate the mean and population standard deviation.

1N(SETUP)c4(STAT)1(ON) N3(STAT)1(1-VAR)

STATSTAT

1 = 2 = 3 = 4 = 5 =ce 1 = 2 = 3 = 2 =

A11(STAT/DIST)4(Var)2(o)=

A11(STAT/DIST)4(Var)3(σ

x)=

Results: Mean: 3 Population Standard Deviation: 1.154700538

EN-26

To calculate the linear regression and logarithmic regression

correlation coefficients for the following paired-variable data and determine the regression formula for the strongest correlation: (x, y) = (20, 3150), (110, 7310), (200, 8800), (290, 9310). Specify Fix 3 (three decimal places) for results.

1N(SETUP)c4(STAT)2(OFF) 1N(SETUP)6(Fix)3 N3(STAT)2(A+BX)

STAT

FIX

STAT

20 = 110 = 200 = 290 =ce 3150 = 7310 =8800 = 9310=

A11(STAT/DIST)5(Reg)3(r)=

A11(STAT/DIST)1(Type)4(In X) A11(STAT/DIST)5(Reg)3(r)=

A11(STAT/DIST)5(Reg)1(A)=

A11(STAT/DIST)5(Reg)2(B)=

Results: Linear Regression Correlation Coefficient: 0.923 Logarithmic Regression Correlation Coefficient: 0.998 Logarithmic Regression Formula:

y = –3857.984 + 2357.532lnx

Calculating Estimated Values

Based on the regression formula obtained by paired-variable statistical calculation, the estimated value of The corresponding

x-value (two values, x

regression) also can be calculated for a value of formula.

To determine the estimate value for y when x = 160 in the

regression formula produced by logarithmic regression of the data in 3. Specify Fix 3 for the result. (Perform the following operation after completing the operations in 3.)

A 160 11(STAT/DIST)5(Reg)5(n)=

Result: 8106.898

Important: Regression coefficient, correlation coefficient, and estimated

value calculations can take considerable time when there are a large number of data items.

y can be calculated for a given x-value.

and x2, in the case of quadratic

y in the regression

Performing Normal Distribution Calculations

While single-variable statistical calculation is selected, you can perform normal distribution calculation using the functions shown below from the menu that appears when you perform the following key operation: 11(STAT/DIST)5(Distr).

EN-27

P, Q, R: These functions take the argument t and determine a probability of standard normal distribution as illustrated below.

(t)R

P (t)Q

0 t 0 t 0 t

t: This function is preceded by the argument X, and determines the

(t)R

(t)

normalized variate .

For the single variable data {

; freqn} = {0;1, 1;2, 2;1, 3;2, 4;2, 5;2,

6;3, 7;4, 9;2, 10;1}, to determine the normalized variate ('t) when x = 3, and P(t) at that point up to three decimal places (Fix 3).

1N(SETUP)c4(STAT)1(ON) 1N(SETUP)6(Fix)3N3(STAT)1(1-VAR)

0 = 1 = 2 = 3 = 4 = 5 = 6 = 7 = 9 =

STAT

FIX

STAT

10=ce1=2=1=2=2=2=3= 4 = 2 = 1 =

STAT

A 3 11(STAT/DIST)5(Distr)4('

t)=

STAT

FIX

11(STAT/DIST)5(Distr)1(P()G)=

Results: Normalized variate (' P(

t): 0.223

t): –0.762

Base-n Calculations (BASE-N)

Press N4(BASE-N) to enter the BASE-N Mode when you want to perform calculations using decimal, hexadecimal, binary, and/or octal values. The initial default number mode when you enter the BASE-N Mode is decimal, which means input and calculation results use the decimal number format. Press one of the following keys to switch number modes:

w(DEC) for decimal, 6(HEX) for hexadecimal, l(BIN) for binary, or i(OCT) for octal.

To enter the BASE-N Mode, switch to the binary mode, and

calculate 11

+ 1

N4(BASE-N)

l(BIN)

11 + 1 =

EN-28

Continuing from above, switch to the hexadecimal mode and

calculate 1F

+ 1

A6(HEX) 1 t(F)+ 1 =

Continuing from above, switch to the octal mode and calculate

+ 1

Ai(OCT) 7 + 1 =

Note: • Use the following keys to input the letters A through F for hexadecimal values: -(A), $(B), w(C), s(D), c(E), t(F). • In the BASE-N Mode, input of fractional (decimal) values and exponents is not supported. If a calculation result has a fractional part, it is cut off. • The input and output ranges is 16 bits for binary values, and 32 bits for other types of values. The following shows details about input and output ranges.

Base-n Mode

Binary

Octal

Decimal

Hexadecimal

Positive: 0000000000000000  Negative: 1000000000000000 

Positive: 00000000000  Negative: 20000000000 

–2147483648 

Positive: 00000000 

Input/Output Ranges

x  0111111111111111 x  1111111111111111

x  17777777777 x  37777777777

x  2147483647

x  7FFFFFFF

Negative: 80000000  x  FFFFFFFF

Specifying the Number Mode of a Particular Input Value

You can input a special command immediately following a value to specify the number mode of that value. The special commands are: d (decimal), h (hexadecimal), b (binary), and o (octal).

To calculate 10

value

+ 10

+ 108 and display the result as a decimal

Aw(DEC) 13(BASE)c1(d) 10 + 13(BASE)c2(h) 10 + 13(BASE)c3(b) 10 + 13(BASE)c4(o) 10 =

Converting a Calculation Result to another Type of Value

You can use any one of the following key operations to convert the currently displayed calculation result to another type of value: x(DEC) (decimal), 6(HEX) (hexadecimal), l(BIN) (binary), i(OCT)(octal).

EN-29

To calculate 1510 × 3710 in the decimal mode, and then convert

the result to hexadecimal, binary, and octal

Ax(DEC) 15 * 37 = 6(HEX) 0000022B l(BIN) 0000001000101011 i(OCT) 00000001053

555

Logical and Negation Operations

Your calculator provides you with logical operators (and, or, xor, xnor) and functions (Not, Neg) for logical and negation operations on binary values. Use the menu that appears when you press 13(BASE) to input these logical operators and functions.

All of the following examples are performed in the binary mode (l(BIN)).

To determine the logical AND of 1010

A 1010 13(BASE)1(and) 1100 =

To determine the logical OR of 10112 and 110102 (10112 or 110102) A 1011 13(BASE)2(or) 11010 =

To determine the logical XOR of 10102 and 11002 (10102 xor 11002)

and 11002 (10102 and 11002)

0000000000001000

0000000000011011

A 1010 13(BASE)3(xor) 1100 =

To determine the logical XNOR of 11112 and 1012 (11112 xnor 1012) A 1111 13(BASE)4(xnor) 101 =

To determine the bitwise complement of 10102 (Not(10102)) A13(BASE)5(Not) 1010 )=

To negate (take the two’s complement) of 1011012 (Neg(1011012)) A13(BASE)6(Neg) 101101 )=

Note: In the case of a negative binary, octal or hexadecimal value, the calculator converts the value to binary, takes the two’s complement, and then converts back to the original number base. For decimal (base-10) values, the calculator merely adds a minus sign.

0000000000000110

1111111111110101

1111111111010011

Equation Calculations (EQN)

You can use the following procedure in the EQN Mode to solve simultaneous linear equations with two or three unknowns, quadratic equations, and cubic equations.

1. Press N5(EQN) to enter the EQN Mode.

2. On the menu that appears, select an equation type.

To select this calculation type: Press this key:

Simultaneous linear equations with two unknowns

Simultaneous linear equations with three unknowns

1(a

2(a

X + bnY = cn)

X + bnY + cnZ = dn)

EN-30

Quadratic equation

Cubic equation

3(aX2 + bX + c = 0)

4(aX

+ bX2 + cX + d = 0)

3. Use the Coefficient Editor that appears to input coefficient values.

• To solve 2 the following for the coefficients (

+ x – 3 = 0, for example, press 3 in step 2, and then input

a = 2, b = 1, c = –3): 2=1=-

3=.

• To change a coefficient value you already have input, move the cursor to the appropriate cell, input the new value, and then press =.

• Pressing A will clear all of the coefficients to zero.

Important: The following operations are not supported by the Coefficient Editor: m, 1m(M–), 1t(STO). Pol, Rec, and multi-statements also cannot be input with the Coefficient Editor.

4. After all the values are the way you want, press =.

• This will display a solution. Each press of = will display another solution. Pressing = while the final solution is displayed will return to the Coefficient Editor.

• You can scroll between the solutions using the c and f keys.

• To return to the Coefficient Editor while any solution is displayed, press A.

Note: • Even if Natural Display is selected, the solutions of simultaneous linear equations are not displayed using any form that includes '.

• Values cannot be converted to engineering notation on the solution screen.

• A message appears to let you know when there is no solution or when there are infinite solutions. Pressing A or = will return to the Coefficient Editor.

Changing the Current Equation Type Setting

Press N5(EQN) and then select an equation type from the menu that appears. Changing the equation type causes the values of all Coefficient Editor coefficients to change to zero.

EQN Mode Calculation Examples

x + 2y = 3, 2x + 3y = 4 N5(EQN)1(a

X + bnY = cn)

1 = 2 = 3 = 2 = 3 = 4 =

= c (Y=) 2

x – y + z = 2, x + y – z = 0, –x + y + z = 4 N5(EQN)2(a

X + bnY + cnZ = dn)

1 =- 1 = 1 = 2 = 1 = 1 =- 1 =0 =

MathMath

(X=) –1

MathMath

- 1 = 1 = 1 = 4 =

(X=) 1

c (Y=) 2 c (Z=) 3

EN-31

2x2 – 3x – 6 = 0 B

N5(EQN)3(aX 2 =- 3 =- 6 ==

+ bX + c = 0)

(X1=)

3 + 57

3 – 57

c (X

c (X-Value Minimum=)*

3 4

c (Y-Value Minimum=)*

–

* The local minimum value is displayed when a  0. The local maximum value

is displayed when

a  0.

N5(EQN)3(aX 1 =- 2 ! 2 )= 2 ==

–

x + 2 = 0 B

2'2

+ bX + c = 0)

(X=)

x3 – 2x2 – x + 2 = 0 N5(EQN)4(aX 1 =- 2 =- 1 = 2 == c (X c (X

+ bX2 + cX + d = 0)

(X1=) –1

=) 2

=) 1

Matrix Calculations (MATRIX)

Use the MATRIX Mode to perform calculations involving matrices of up to 3 rows by 3 columns. To perform a matrix calculation, you first assign data to special matrix variables (MatA, MatB, MatC), and then use the variables in the calculation as shown in the example below.

2 1 1 1

2 –1 –1 2

to MatB, and then perform

2 –1 –1 2

(MatA×MatB),

2 1

To assign

to MatA and

1 1

the following calculations:

2 1 1 1

2 –1 –1 2

(MatA+MatB)

1. Press N6(MATRIX) to enter the MATRIX Mode.

2. Press 1(MatA)5(2×2).

• This will display the Matrix Editor for input

MATMAT

of the elements of the 2 × 2 matrix you specified for MatA.

“A” stands for “MatA”.

3. Input the elements of MatA: 2 = 1 = 1 = 1 =.

4. Perform the following key operation: 1 4 (MATRIX)2 (Data)

2(MatB)5(2×2).

• This will display the Matrix Editor for input of the elements of the 2 × 2 matrix you specified for MatB.

EN-32

5. Input the elements of MatB: 2 =- 1 =- 1 = 2 =.

6. Press A to advance to the calculation screen, and perform the first

calculation (MatA×MatB): 14(MATRIX)3(MatA)*14(MATRIX)

4(MatB)=.

• This will display the MatAns screen with the calculation results.

MAT

“Ans” stands for “MatAns”.

MAT

→

MAT

Note: “MatAns” stands for “Matrix Answer Memory”. See “Matrix Answer Memory” for more information.

7. Perform the next calculation (MatA+MatB): A14 (MATRIX) 3(MatA)+14(MATRIX)4(MatB)=.

MAT

→

MAT

Matrix Answer Memory

Whenever the result of a calculation executed in the MATRIX Mode is a matrix, the MatAns screen will appear with the result. The result also will be assigned to a variable named “MatAns”.

The MatAns variable can be used in calculations as described below.

• To insert the MatAns variable into a calculation, perform the following

key operation: 14(MATRIX)6(MatAns).

• Pressing any one of the following keys while the MatAns screen is

displayed will switch automatically to the calculation screen: +, -, *,

/, E, w, 1w(

). The calculation screen will show the MatAns

variable followed by the operator or function for the key you pressed.

Assigning and Editing Matrix Variable Data

Important: The following operations are not supported by the Matrix Editor:

m, 1m(M–), 1t(STO). Pol, Rec, and multi-statements also cannot be input with the Matrix Editor.

To assign new data to a matrix variable:

1. Press 14(MATRIX)1(Dim), and then, on the menu that appears, select the matrix variable to which you want to assign data.

2. On the next menu that appears, select dimension (

3. Use the Matrix Editor that appears to input the elements of the matrix.

To assign

1 0 –1 0 –1 1

to MatC

14(MATRIX)

m×n).

MATMAT

1(Dim)3(MatC)4(2×3) 1 = 0 =- 1 = 0 =- 1 = 1 =

To edit the elements of a matrix variable:

1. Press 14(MATRIX)2(Data), and then, on the menu that appears, select the matrix variable you want to edit.

EN-33

2. Use the Matrix Editor that appears to edit the elements of the matrix.

• Move the cursor to the cell that contains the element you want to change,

input the new value, and then press =.

To copy matrix variable (or MatAns) contents:

1. Use the Matrix Editor to display the matrix you want to copy.

• If you want to copy MatA, for example, perform the following key

operation: 14(MATRIX)2(Data)1(MatA).

• If you want to copy MatAns contents, perform the following to display the

MatAns screen: A14(MATRIX)6(MatAns)=.

2. Press 1t(STO), and then perform one of the following key operations

to specify the copy destination: -(MatA), $(MatB), or w(MatC).

• This will display the Matrix Editor with the contents of the copy destination.

Matrix Calculation Examples

The following examples use MatA =

and MatC =

1 0 –1 0 –1 1

from

. You can input a matrix variable into a key

2 1

and MatB =

1 1

operation by pressing 14(MATRIX) and then pressing one of the following number keys: 3(MatA), 4(MatB), 5(MatC).

2 –1 –1 2

from

3 × MatA (Matrix scalar multiplication).

A 3 *MatA=

Obtain the determinant of MatA (det(MatA)).

A14(MATRIX)7(det) MatA)=

Obtain the transposition of MatC (Trn(MatC)).

A14(MATRIX)8(Trn) MatC)=

Obtain the inverse matrix of MatA (MatA

–1

Note: You cannot use 6 for this input. Use the E key to input “

AMatAE=

Obtain the absolute value of each element of MatB (Abs(MatB)).

A1w(Abs) MatB)=

–1

”.

Determine the square and cube of MatA (MatA

, MatA3).

Note: You cannot use 6 for this input. Use w to specify squaring, and

1w(

) to specify cubing.

AMatAw=

AMatA1w(

EN-34

Determine the MatA= row echelon form.

A!4(MATRIX)c1(Ref) MatA)=

Determine the MatA=

1010

A!4(MATRIX)c2(Rref) MatA)=

reduced row echelon form.

Creating a Number Table from Two Functions (TABLE)

TABLE generates a number table based on one or two functions. You can use the function Calculator Setup” for more information. Perform the following steps to generate a number table.

1. Press N7(TABLE) to enter the TABLE Mode.

2. Use the X variable to input two functions, one in the format other in the format

• Be sure to input the X variable (S)(X)) when generating a number

table. Any variable other than X is handled as a constant.

• If you are using a single function, input a function in the format only.

• The following cannot be used in the function: Pol, Rec, ∫,

3. In response to the prompts that appear, input the values you want to use,

pressing = after each one.

f(x) or the two functions f(x) and g(x). See “Configuring the

f(x) and the

g(x).

f(x)

d/dx, Σ.

For this prompt: Input this:

Start?

End? Input the upper limit of X (Default = 5).

Step? Input the increment step (Default = 1).

• Inputting the Step value and pressing = generates and displays the number table in accordance with the parameters you specified.

• Pressing A while the number table screen is displayed will return to the function input screen in step 2.

Input the lower limit of X (Default = 1).

Note: Make sure that the End value is always greater than the Start value.

Note: The Step specifies by how much the Start value should be sequentially incremented as the number table is generated. If you specify Start = 1 and Step = 1, X sequentially will be assigned the values 1, 2, 3, 4, and so on to generate the number table until the End value is reached.

EN-35

To generate a number table for the functions

g(x) = x

−

for the range –1  x  1, incremented in steps of 0.5

N7(TABLE)

(x) =

and

MathMath

1N(SETUP)c5(TABLE)2(f(x),g(x))

MathMath

S)(X)x+ 1 ' 2

MathMath

• Pressing = without inputting anything for table based on

f(x) only.

g(x) will generate a number

MathMath

S)(X)x- 1 ' 2

MathMath

=-1 =1 =0.5 =

Note: • The maximum number of rows in the generated number table depends on the setup menu table setting. Up to 30 rows are supported for the “f(x)” setting, while 20 rows are supported for the “f(x),g(x)” setting. • You can use the number table screen for viewing values only. Table contents cannot be edited. • The number table generation operation causes the contents of variable X to be changed.

Important: The function you input for number table generation is deleted whenever you display the setup menu in the TABLE Mode and switch between Natural Display and Linear Display.

Vector Calculations (VECTOR)

Use the VECTOR Mode to perform 2-dimensional and 3-dimensional vector calculations. To perform a vector calculation, you first assign data to special vector variables (VctA, VctB, VctC), and then use the variables in the calculation as shown in the example below.

To assign (1, 2) to VctA and (3, 4) to VctB, and then perform the

following calculation: (1, 2) + (3, 4)

1. Press N8(VECTOR) to enter the VECTOR Mode.

2. Press 1(VctA)2(2).

• This will display the Vector Editor for input of the 2-dimensional vector for VctA.

“A” stands for “VctA”.

EN-36

VCTVCT

3. Input the elements of VctA: 1 = 2 =.

4. Perform the following key operation: 1 5 (VECTOR)2 (Data) 2(VctB)2(2).

• This will display the Vector Editor for input of the 2-dimensional vector for VctB.

5. Input the elements of VctB: 3 = 4 =.

6. Press A to advance to the calculation screen, and perform the calculation

(VctA + VctB): 1 5 (VECTOR)3 (VctA)+ 1 5 (VECTOR) 4(VctB)=.

• This will display the VctAns screen with the calculation results.

VCTVCT

“Ans” stands for “VctAns”.

Note: “VctAns” stands for “Vector Answer Memory”. See “Vector Answer Memory” for more information.

→

VCTVCT

Vector Answer Memory

Whenever the result of a calculation executed in the VECTOR Mode is a vector, the VctAns screen will appear with the result. The result also will be assigned to a variable named “VctAns”.

The VctAns variable can be used in calculations as described below.

• To insert the VctAns variable into a calculation, perform the following key

operation: 15(VECTOR)6(VctAns).

• Pressing any one of the following keys while the VctAns screen is displayed

will switch automatically to the calculation screen: +, -, *, /. The calculation screen will show the VctAns variable followed by the operator for the key you pressed.

Assigning and Editing Vector Variable Data

Important: The following operations are not supported by the Vector Editor:

m, 1m(M–), 1t(STO). Pol, Rec, and multi-statements also cannot be input with the Vector Editor.

To assign new data to a vector variable:

1. Press 15(VECTOR)1(Dim), and then, on the menu that appears,

select the vector variable to which you want to assign data.

2. On the next menu that appears, select dimension (

3. Use the Vector Editor that appears to input the elements of the vector.

To assign (2, –1, 2) to VctC

15(VECTOR)1(Dim)3(VctC)1(3)

m).

VCTVCT

2 =- 1 = 2 =

To edit the elements of a vector variable:

1. Press 15(VECTOR)2(Data), and then, on the menu that appears,

select the vector variable you want to edit.

2. Use the Vector Editor that appears to edit the elements of the vector.

• Move the cursor to the cell that contains the element you want to change, input the new value, and then press =.

EN-37

To copy vector variable (or VctAns) contents:

1. Use the Vector Editor to display the vector you want to copy.

• If you want to copy VctA, for example, perform the following key operation: 15(VECTOR)2(Data)1(VctA).

• If you want to copy VctAns contents, perform the following to display the VctAns screen: A15(VECTOR)6(VctAns)=.

2. Press 1t(STO), and then perform one of the following key operations to specify the copy destination: -(VctA), $(VctB), or w(VctC).

• This will display the Vector Editor with the contents of the copy destination.

Vector Calculation Examples

The following examples use VctA = (1, 2) and VctB = (3, 4) from 1, and VctC =

(2, –1, 2) from 2. You can input a vector variable into a key operation by pressing 15(VECTOR) and then pressing one of the following number

keys: 3(VctA), 4(VctB), 5(VctC).

3 × VctA (Vector scalar multiplication), 3 × VctA – VctB (Calculation

example using VctAns)

VCTVCT

A 3 *VctA=

-VctB=

VctA

• VctB (Vector dot product)

AVctA15(VECTOR)7(Dot)VctB=

VctA × VctB (Vector cross product)

AVctA*VctB=

VCTVCT

Obtain the absolute values of VctC.

VCTVCT

A1w(Abs)VctC)=

Determine the angle formed by VctA and VctB to three decimal

places (Fix 3). v

•

(cos

 =

AB

, which becomes  = cos–1

•

AB

)

1N(SETUP)6(Fix)3

A(VctA15(VECTOR)7(Dot)VctB)/

EN-38

VCT FIXVCT FIX

(1w(Abs)VctA)1w(Abs) VctB))=

VCT FIXVCT FIX

1c(cos

–1

)G)=

Distribution Calculations (DIST)

You can use the procedures below to perform seven different types of distribution calculations.

1. Press Nc1(DIST) to enter the DIST Mode.

2. On the menu that appears, select a distribution calculation type.

To select this type of calculation: Press this key:

Normal probability density

Normal cumulative distribution

Inverse normal cumulative distribution

Binomial probability

Binomial cumulative distribution

Poisson probability

Poisson cumulative distribution

3. Input values for the variables.

• With Binomial PD, Binomial CD, Poisson PD, and Poisson CD, you can input sample data and then perform calculations.

4. After inputting values for all of the variables, press =.

• This displays the calculation results.

• Pressing = or A while a calculation result is displayed will return to the input screen of the first variable

Note: • To change the distribution calculation type after you enter the DIST Mode, press !1(STAT/DIST)1(Type) and then select the distribution type you want. • Distribution calculation accuracy is up to five significant digits.

1(Normal PD) 2(Normal CD) 3(Inverse Normal) 4(Binomial PD)

c1(Binomial CD) c2(Poisson PD) c3(Poisson CD)

Variables that Accept Input

The following are distribution calculation variables that accept input values.

Normal PD ...........................

Normal CD ........................... Lower, Upper, σ, 

Inverse Normal .................... Area, σ,  (Tail setting always left.)

Binomial PD, Binomial CD ...

Poisson PD, Poisson CD .....

: data, σ: standard deviation (σ  0), : mean, Lower: lower boundary, Upper:

upper boundary, Tail: probability value tail specification, Area: probability value (0  Area  1), List: sample data list, N: number of trials, p: success probability (0  p  1)

x, σ, 

x (or List), N, p x (or List), 

EN-39

List Screen (Binomial PD, Binomial CD, Poisson PD, Poisson CD)

With Binomial PD, Binomial CD, Poisson PD, and Poisson CD, use the List Screen for sample data input. You can input up to 25 data samples for each variable. Calculation results are also displayed on the List Screen.

Distribution calculation type

Value at current cursor position

X: Sample data Ans: Calculation results

To edit sample data: Move the cursor to the cell that contains the sample data you want to edit, input the new sample data, and then press =. To delete sample data: Move the cursor to the sample data you want to delete and then press D. To insert sample data: Move the cursor to the position where you want to insert the sample data, press !1(STAT/DIST)2(Edit)1(Ins), and then input the sample data.

To delete all sample data: Press !1(STAT/DIST)2(Edit)2(Del-A).

DIST Mode Calculation Examples

To calculate the normal probability density when x = 36, σ = 2,  =35

Nc1(DIST)

1(Normal PD)

36 =

2 =

35 =

Result: 0.1760326634

• Pressing = or A returns to the

x input screen.

EN-40

To calculate binomial probability for the sample data {10, 11, 12, 13,

14} when N=15 and p=0.6

Nc1(DIST)4(Binomial PD)

Display the List Screen: 1(List)

• To specify data using parameter format, press 2(Var).

10 = 11 = 12 = 13 = 14 =

15 =

0.6 =

ecccc

Results:

x = binomial probability of 10 ⱌ 0.18594 x = binomial probability of 11 ⱌ 0.12678 x = binomial probability of 12 ⱌ 0.063388 x = binomial probability of 13 ⱌ 0.021942 x = binomial probability of 14 ⱌ 4.7018 × 10

• Pressing = returns to the N input screen. Pressing A returns to the List

Screen (input data samples are stored).

Note • The following cannot be used in the distribution calculations: Pol, Rec, ∫, results are stored in Ans memory. • An error message appears if the input value is outside the allowable range. “ERROR” will appear in the Ans column of the List Screen when the value input for the corresponding sample data is outside the allowable range.

d/dx. • When data is specified using parameter format, calculation

−3

EN-41

Scientific Constants

Your calculator comes with 40 built-in scientific constants that can be used in any mode besides BASE-N. Each scientific constant is displayed as a unique symbol (such as π), which can be used inside of calculations. To input a scientific constant into a calculation, press 17(CONST) and then input the two-digit number that corresponds to the constant you want.

To input the scientific constant C

display its value

(speed of light in a vacuum), and

28(C

To calculate C

A' 1 c!17(CONST)32(ε

17(CONST)33(

A17(CONST)

0μ0



MathMath

)

The following shows the two-digit numbers for each of the scientific constants.

01: (mp) proton mass 02: (mn) neutron mass

03: (me) electron mass

04: (m

) muon mass

05: (a

07: (

09: (h) Planck constant, rationalized

11: (re) classical electron radius

13: (γp) proton gyromagnetic ratio

15: (λcn) neutron Compton wavelength

17: (u) atomic mass constant

) Bohr radius 06: (h) Planck constant

N) nuclear magneton 08: (B) Bohr magneton

10: (α) fine-structure constant

12: (λc) Compton wavelength

14: (λcp) proton Compton wavelength

16: (R∞) Rydberg constant

p) proton magnetic

18: ( moment

e) electron magnetic moment

19: (

21: (

) muon magnetic moment

20: (n) neutron magnetic moment

22: (F) Faraday constant

23: (e) elementary charge 24: (NA) Avogadro constant

EN-42

25: (k) Boltzmann constant

26: (Vm) molar volume of ideal gas (273.15K, 100kPa)

27: (R) molar gas constant 28: (C

29: (C

) first radiation constant

30: (C2) second radiation constant

31: (σ) Stefan-Boltzmann constant 32: (ε



33: (

) magnetic constant

35: (g) standard acceleration of gravity

37: (Z

) characteristic impedance of

vacuum

39: (G) Newtonian constant of gravitation

34: (φ

36: (G

38: (t) Celsius temperature

40: (atm) standard atmosphere

) speed of light in vacuum

) electric constant

) magnetic flux quantum

) conductance quantum

The values are based on CODATA (2010) recommended values.

Metric Conversion

The calculator’s built-in metric conversion commands make it simple to convert values from one unit to another. You can use the metric conversion commands in any calculation mode except for BASE-N and TABLE. To input a metric conversion command into a calculation, press 18(CONV) and then input the two-digit number that corresponds to the command you want.

To convert 5 cm into inches b

A 5 18(CONV)

02(cm'in)=

To convert 100 g into ounces b

A 100 18(CONV)22(g'oz)=

To convert –31°C into Fahrenheit b

A- 31 18(CONV)38(°C'°F)=

EN-43

The following shows the two-digit numbers for each of the metric conversion commands.

01: in ' cm 02: cm ' in 03: ft ' m 04: m ' ft

05: yd ' m 06: m ' yd 07: mile ' km 08: km ' mile

09: n mile ' m 10: m ' n mile 11: acre ' m

12: m2 ' acre

13: gal (US) 'R 14: R' gal (US) 15: gal (UK) 'R 16: R' gal (UK)

17: pc ' km 18: km ' pc 19: km/h ' m/s 20: m/s ' km/h

21: oz ' g 22: g ' oz 23: lb ' kg 24: kg ' lb

25: atm ' Pa 26: Pa ' atm 27: mmHg ' Pa 28: Pa ' mmHg

29: hp ' kW 30: kW ' hp 31: kgf/cm

' Pa 32: Pa ' kgf/cm

33: kgf • m ' J 34: J ' kgf • m 35: lbf/in2 ' kPa 36: kPa ' lbf/in

37: °F ' °C 38: °C ' °F 39: J ' cal 40: cal ' J

Conversion formula data is based on the “NIST Special Publication 811 (2008)”. Note: The J'cal command performs conversion for values at a temperature of 15°C.

Calculation Ranges, Number of Digits, and Precision

The calculation range, number of digits used for internal calculation, and calculation precision depend on the type of calculation you are performing.

Calculation Range and Precision

Calculation Range

Number of Digits for Internal Calculation

Precision

±1 × 10

15 digits

In general, ±1 at the 10th digit for a single calculation. Precision for exponential display is ±1 at the least significant digit. Errors are cumulative in the case of consecutive calculations.

Function Calculation Input Ranges and Precision

Functions Input Range

DEG

0  |

x|  9 × 10

–99

to ±9.999999999 × 1099 or 0

sin

cosx

tanx

RAD

GRA

DEG

RAD

GRA

DEG

RAD

GRA

x|  157079632.7

0  |

x|  1 × 10

0  |

x|  9 × 10

0  |

x|  157079632.7

0  | 0  |

x|  1 × 10

Same as sin

EN-44

x, except when |x| = (2n–1) × 90. x, except when |x| = (2n–1) × π/2. x, except when |x| = (2n–1) × 100.

sin

cos

tan

–1

0  |x|  1

0  |x|  9.999999999 × 10

sinhx

cosh

–1

sinh

cosh

–1

tanhx

–1

tanh

logx/lnx

–1

nPr

nCr

Pol(x, y)

0  |x|  230.2585092

0  |x|  4.999999999 × 10 1  x  4.999999999 × 10 0  |x|  9.999999999 × 10 0  |x|  9.999999999 × 10 0  x  9.999999999 × 10

–1

–9.999999999 × 1099  x  99.99999999 –9.999999999 × 1099  x  230.2585092 0  x  1 × 10

|x|  1 × 10 |x|  1 × 10 |x|  1 × 10

x  69 (x is an integer)

0 

n  1 × 10

0  1  {n!/(n–r)!}  1 × 10

n  1 × 10

0  1  n!/r!  1 × 10

|x|, |y|  9.999999999 × 10

+ y2

 9.999999999 × 10

100

; x ≠ 0

100

, 0  r  n (n, r are integers)

100

, 0  r  n (n, r are integers)

100

or 1  n!/(n–r)!  1 × 10

100

Rec(r, )

°’ ”

0 

r  9.999999999 × 10

: Same as sinx

a|, b, c  1 × 10

100

; 0  b, c

The display seconds value is subject to an error of 앧1 at the second decimal place.

|x|  1 × 10

100

Decimal ↔ Sexagesimal Conversions 0°0´0˝  |x|  9999999°59´59˝

x  0: –1 × 10 x = 0: y  0 x  0: y = n,

100

 ylogx  100

(m, n are integers)

2n+1

When x is a complex number: |y|  1 × 1010 (y is an integer) However: –1 × 10

 0: x ≠ 0, –1 × 10

100

 ylog |x|  100

100

 1/x logy  100

y = 0: x  0 y  0: x = 2n+1,

However: –1 × 10

2n+1

(m ≠ 0; m, n are integers)

100

 1/x log |y|  100

EN-45

RanInt#(

a, b)

Total of integer, numerator, and denominator must be 10 digits or less (including division marks).

a  b; |a

|, |b|

 1 × 1010; b – a  1 × 10

• Precision is basically the same as that described under “Calculation Range and Precision”, above.

y, x

•

, 3', x!, nPr, nCr type functions require consecutive internal

calculation, which can cause accumulation of errors that occur with each calculation.

• Error is cumulative and tends to be large in the vicinity of a function’s singular point and inflection point.

• The range for calculation results that can be displayed in π form when using Natural Display is |

x|  10

. Note, however, that internal calculation error

can make it impossible to display some calculation results in π form. It also can cause calculation results that should be in decimal form to appear in π form.

Errors

The calculator will display an error message whenever an error occurs for any reason during a calculation. There are two ways to exit an error message display: Pressing d or e to display the location of the error, or pressing A to clear the message and calculation.

Displaying the Location of an Error

While an error message is displayed, press d or e to return to the calculation screen. The cursor will be positioned at the location where the error occurred, ready for input. Make the necessary corrections to the calculation and execute it again.

When you input 14 ÷ 0 × 2 = by mistake instead of 14 ÷ 10 × 2 =

14 / 0 * 2 =

e (or d)

d 1 =

MathMath

Clearing the Error Message

While an error message is displayed, press A to return to the calculation screen. Note that this also clears the calculation that contained the error.

Error Messages

Math ERROR Cause: • The intermediate or final result of the calculation you are performing

exceeds the allowable calculation range. • Your input exceeds the allowable

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input range (particularly when using functions). • The calculation you are performing contains an illegal mathematical operation (such as division by zero). Action: • Check the input values, reduce the number of digits, and try again.

• When using independent memory or a variable as the argument of a function,

make sure that the memory or variable value is within the allowable range for the function.

Stack ERROR Cause: • The calculation you are performing has caused the capacity of

the numeric stack or the command stack to be exceeded. • The calculation you are performing has caused the capacity of the matrix or vector stack to be exceeded. Action: • Simplify the calculation expression so it does not exceed the capacity of the stack. • Try splitting the calculation into two or more parts.

Syntax ERROR Cause: There is a problem with the format of the calculation you are

performing.

Action: Make necessary corrections.

Argument ERROR Cause: There is a problem with the argument of the calculation you are

performing.

Action: Make necessary corrections.

Dimension ERROR (MATRIX and VECTOR Modes only) Cause: • The matrix or vector you are trying to use in a calculation was input

without specifying its dimension. • You are trying to perform a calculation with matrices or vectors whose dimensions do not allow that type of calculation. Action: • Specify the dimension of the matrix or vector and then perform the calculation again. • Check the dimensions specified for the matrices or vectors to see if they are compatible with the calculation.

Variable ERROR (SOLVE feature only) Cause: • You did not specify a solution variable, and there is no X variable

in the equation you input. • The solution variable that you specified is not included in the equation you input. Action: • The equation you input must include an X variable when you do not specify the solution variable. • Specify a variable that is included in the equation you input as the solution variable.

Can’t Solve Error (SOLVE feature only) Cause: The calculator could not obtain a solution. Action: • Check for errors in the equation that you input. • Input a value

for the solution variable that is close to the expected solution and try again.

Insufficient MEM Error Cause: An attempt to generate a number table in the TABLE Mode whose

conditions cause it to exceed the maximum number of allowable rows. The maximum number of rows is 30 when “f(x)” is selected for the setup menu table setting and 20 when “f(x),g(x)” is selected. Action: Narrow the table calculation range by changing the Start, End, and Step values, and try again.

Time Out Error Cause: The current differential or integration calculation ends without the

ending condition being fulfilled. The current distribution calculation ends

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without the ending condition being fulfilled. Action: Differential or integration calculation: Try increasing the Note that this also decreases solution precision.

tol value.

Before Assuming Malfunction of the Calculator...

Perform the following steps whenever an error occurs during a calculation or when calculation results are not what you expected. If one step does not correct the problem, move on to the next step. Note that you should make separate copies of important data before performing these steps.

1. Check the calculation expression to make sure that it does not contain any

errors.

2. Make sure that you are using the correct mode for the type of calculation

you are trying to perform.

3. If the above steps do not correct your problem, press the O key. This will

cause the calculator to perform a routine that checks whether calculation functions are operating correctly. If the calculator discovers any abnormality, it automatically initializes the calculation mode and clears memory contents. For details about initialized settings, see “Configuring the Calculator Setup”.

4. Initialize all modes and settings by performing the following operation:

19(CLR)1(Setup)=(Yes).

Replacing the Battery

A low battery is indicated by a dim display, even if contrast is adjusted, or by failure of figures to appear on the display immediately after you turn on the calculator. If this happens, replace the battery with a new one. Important: Removing the battery will cause all of the calculator’s memory contents to be deleted.

1. Press 1A(OFF) to turn off the calculator.

• To ensure that you do not accidentally turn on power while replacing the battery, slide the hard case onto the front of the calculator.

2. Remove the cover as shown in the illustration and replace the battery, taking care that its plus (+) and minus (–) ends are facing correctly.

3. Replace the cover.

4. Initialize the calculator: O19(CLR)3(All)=(Yes)

• Do not skip the above step!

Screw

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Specifications

Power Requirements:

Built-in solar cell; button battery LR44 (GPA76) × 1

Approximate Battery Life:

3 years (based on one hour of operation per day)

Operating Temperature: 0°C to 40°C (32°F to 104°F) Dimensions: 11.1 (H) × 80 (W) × 162 (D) mm

Approximate Weight: 95 g (3.4 oz) including the battery

/8⬙ (H) × 31/8⬙ (W) × 63/8⬙ (D)

Frequently Asked Questions

k How can I perform input and display results the same way I did on a

model that does not have Natural Textbook Display?

Perform the following key operation: 1N(SETUP)2(LineIO). See

“Configuring the Calculator Setup” on page EN-5 for more information.

k How can I change a fraction form result to decimal form? How can I change a fraction form result produced by a division

operation to decimal form?

See “Toggling Calculation Results” on page EN-10 for the procedure.

k What is the difference between Ans memory, PreAns memory,

independent memory, and variable memory?

Each of these types of memory acts like “containers” for temporary storage

of a single value.

Ans Memory: Stores the result of the last calculation performed. Use this

memory to carry the result of one calculation on to the next.

PreAns Memory: Stores the result of calculation before the last one.

PreAns memory can be used only in the COMP Mode.

Independent Memory: Use this memory to totalize the results of multiple

calculations.

Variables: This memory is helpful when you need to uses the same value

multiple times in one or more calculations.

k What is the key operation to take me from the STAT Mode or TABLE

Mode to a mode where I can perform arithmetic calculations?

Press N1(COMP).

k How can I return the calculator to its initial default settings?

Perform the following operation: 19(CLR)1(Setup)=(Yes)

k When I execute a function calculation, why do I get a calculation result

that is completely different from older CASIO calculator models?

With a Natural Textbook Display model, the argument of a function that

uses parentheses must be followed by a closing parenthesis. Failing to press ) after the argument to close the parentheses may cause unwanted values or expressions to be included as part of the argument.

Example: (sin 30) + 15 v Older (S-V.P.A.M.) Model: s 30 + 15 =

Natural Textbook Display Model: b s 30 )+ 15 = 15.5

Failure to press ) here as shown below will result in calculation of sin 45.

s 30 + 15 = 0.7071067812

15.5

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Manufacturer:

CASIO COMPUTER CO., LTD. 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan

Responsible within the European Union: CASIO EUROPE GmbH Casio-Platz 1 22848 Norderstedt, Germany

This mark applies in EU countries only.

CASIO COMPUTER CO., LTD.

6-2, Hon-machi 1-chome

Shibuya-ku, Tokyo 151-8543, Japan

SA1406-A

Casio fx-991ZA PLUS Owner's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual