fx-115ES PLUS
fx-115ES PLUS
fx-991ES PLUS C
User’s Guide
E
CASIO Worldwide Education Website
http://edu.casio.com
CASIO EDUCATIONAL FORUM
http://edu.casio.com/forum/
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
Recurring Decimal Calculations ......................................... 10
Toggling Calculation Results ............................................... 14
Basic Calculations ................................................................. 14
Remainder Calculations ....................................................... 18
Prime Factorization ............................................................... 19
Function Calculations ........................................................... 20
Complex Number Calculations (CMPLX) ........................... 25
Using CALC ............................................................................ 26
Using SOLVE .......................................................................... 27
Statistical Calculations (STAT) ............................................. 29
Base-
Equation Calculations (EQN) ............................................... 35
Matrix Calculations (MATRIX) ............................................... 37
Creating a Number Table from Two Functions (TABLE) .... 39
Vector Calculations (VECTOR) ............................................. 41
Inequality Calculations (INEQ) ............................................ 43
Using VERIFY (VERIF) .......................................................... 45
n Calculations (BASE-N) ............................................. 33
Distribution Calculations (DIST) .......................................... 47
Scientific Constants .............................................................. 50
Metric Conversion ................................................................. 51
Calculation Ranges, Number of Digits, and Precision ....... 52
Errors ...................................................................................... 54
Before Assuming Malfunction of the Calculator... ............. 56
Replacing the Battery ............................................................ 56
Specifications ........................................................................ 57
Frequently Asked Questions ................................................ 57
E-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.
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• 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
Your calculator will turn off automatically if you do not perform any operation
for about 10 minutes. 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
–1
sin
D
sin
D
s
s
Keycap function
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.
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Reading the Display
The display of the calculator shows expressions you input, calculation results,
and various indicators.
Input expression Indicators
Math
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
Math
This
indicator:
M
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
7
8
9
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.
E-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
Inequality solution
Verify a calculation
Distribution Calculations
Perform this key
operation:
N1(COMP)
N2(CMPLX)
N3(STAT)
N4(BASE-N)
N5(EQN)
N6(MATRIX)
N7(TABLE)
N8(VECTOR)
Nc1(INEQ)
Nc2(VERIF)
Nc3(DIST)
Note: The initial default calculation mode is the COMP Mode.
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.
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1MthIO 2LineIO Specifies the display format.
Natural Display (MthIO) causes fractions,
MathMath
irrational numbers, and other expressions to be
displayed as they are written on paper.
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
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)
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c6Rdec 1ON ; 2OFF Specifies whether or not to display
calculation results using recurring decimal form.
c7Disp 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 (;).
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 )=
*
*
1
2
*
3
*1 Input of the closing parenthesis is required for sin, sinh, and other functions
that include parentheses.
2
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
3
The closing parenthesis immediately before the = operation can be
*
omitted.
2
Input example omitting **
and )*3 operations in the above
example.
MathMath
e.
MathMath
4 s 30 )( 30 + 10 * 3 =
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-7
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 (")
2
x
, x3, x–1, x!, °’ ”, °, r, g,
Fractions
Negative sign (–), base-
n symbols (d, h, b, o)
Note: When squaring a negative value (such as –2), the value
being squared must be enclosed in parentheses ((- 2 )w
5th
=). Since
inputting - 2 w= would result in the squaring of 2 and then
2
x
has a higher priority than the negative sign,
appending a negative sign to the result. Always keep the priority
sequence in mind, and enclose negative values in parentheses
when required.
6th
Metric conversion commands (cm'in, etc.),
STAT Mode estimated values (m, n, m
, m2)
1
7th Multiplication where the multiplication sign is omitted
8th
Permutation (nPr), combination (nCr), complex number polar
coordinate symbol (∠)
9th Dot product (·)
10th
Multiplication (×), division (÷), remainder calculations (÷R)
11th Addition, subtraction (+, –)
12th Logical AND (and)
13th Logical OR, XOR, XNOR (or, xor, xnor)
Inputting with Natural Display
Selecting Natural Display makes it possible to input and display fractions
2
x
and certain functions (log,
Abs) just as they are written in your textbook.
2 + '2
B
1 + '2
' 2 +! 2 ee 1 +! 2 =
, x3, x^, ), #, ", x−1, 10^, e^, ∫ , d/dx, Σ, Π,
MathMath
E-8
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
7
.
6
7
, for example, you can make
6
7
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), a&(9), 1 6("), 1l($),
1i(%), !, 6, 1!(#), 1w(Abs).
and then change it to 1 +
6
7
B
6
MathMath
MathMath
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.
E-9
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.
Recurring Decimal Calculations
Your calculator uses a recurring decimal when you input a value. Calculation
results also can be displayed using recurring decimal form whenever
applicable.
Inputting a Recurring Decimal
When inputting a recurrent decimal, press a!( k ) before inputting its
period (repetend) and then input the period up to the ending value. To input
the recurring decimal 0.909090.... (0.90), perform the following operation:
“0 .a!( k ) 90”.
Important: • If the value starts with an integer part (like: 12.3123123...), do
not include the integer part when inputting the period (12.312). • Recurring
decimal input is possible only when Natural Display is selected.
To input 0.33333... (0.3) B
0 .
a!( k )
3
To input 1.428571428571... (1.428571) B
1 .a!( k )
MathMath
MathMath
MathMath
MathMath
MathMath
428571
To calculate 1.021 + 2.312 B
1 .a!( k ) 021e+
2 .a!( k ) 312=
Calculation result displayed as recurring
decimal value: f
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MathMath
MathMath
Note: • You can specify up to 14 decimal places for the recurring decimal
period. If you input more than 14 decimal places, the value will be treated as
a terminating decimal and not a recurring decimal. • Recurring decimal value
input can be performed regardless of the Rdec setting on the setup menu.
Displaying a Calculation Result as a Recurring
Decimal Value
Calculation results that can be displayed as recurring decimal values will be
displayed as such when ON is selected for the Rdec setting on the setup
menu. Pressing the f key will cycle between the available calculation result
formats as shown below.
Fraction Recurring Decimal
Decimal Value According to Display (Norm, Fix, Sci) Settings
Or
Decimal Value According to Display (Norm, Fix, Sci) Settings
Recurring Decimal Fraction
1
= 0.142857 = 0.1428571429 (Norm 1) B
7
1 ' 7 =
Display as recurring decimal: f
Decimal value according to Norm 1 setting: f
Return to initial display format (fraction): f
1 ÷ 7 =
1
= 0.142857 = 0.1428571429 (Norm 1) B
7
MathMath
MathMath
MathMath
MathMath
MathMath
1 / 7 !=
Display as fraction: f
Display as recurring decimal: f
E-11
MathMath
MathMath
Return to initial display format (Norm 1): f
MathMath
1 ' 7 =
Display as recurring decimal: f
Decimal value according to Norm 1 setting: f
Return to initial display format (fraction): f
1 ÷ 7 = 0.1428571429 (Norm 1) = 0.142857 =
1
= 0.142857 = 0.1428571429 (Norm 1) b
7
1
b
7
1 / 7 =
Display as fraction: f
Display as recurring decimal: f
Return to initial display format (Norm 1): f
Conditions for Displaying a Calculation Result as a
Recurring Decimal
If a calculation result satisfies the following conditions, pressing f will
display it as a recurring decimal value.
• The total number of digits used in the mixed fraction (including integer,
numerator, denominator, and separator symbol) must be no more than
10.
E-12
• The data size of value to be displayed as the recurring decimal must be no
larger than 99 bytes. Each value and the decimal point require one byte,
and each digit of the period requires one byte. The following, for example,
would require of total of 8 bytes (4 bytes for the values, 1 byte for the decimal
point, 3 bytes for the period): 0.123
Note: For information about switching the display format of a calculation
result when OFF is selected for the Rdec setting on the setup menu, see
“Toggling Calculation Results”.
Recurring Decimal Examples
0.3 + 0.45 = 0.78 B
MathMath
0 .a!( k ) 3 e+
0 .a!( k ) 45 =f
1.6 + 2.8 = 4.5 B
1 .a!( k ) 6 e+
2 .a!( k ) 8 =f
123
To confirm the following: 0.123 =
0.12345 =
12345
B
, 0.1234 =
999
99999
123 ' 999 =
f
1234 ' 9999 =
1234
9999
MathMath
,
MathMath
MathMath
MathMath
f
12345 ' 99999 =
f
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MathMath
MathMath
MathMath
Toggling Calculation Results
π
'
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.
1
π ÷ 6 =
15(π)/ 6 =
= 0.5235987756 B
π
6
1
6
f
0.5235987756
(
(! 2 e+ 2 )*! 3 =
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 =
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. • When ON is selected for Rdec on the setup
menu, pressing f will switch the calculation result to recurring decimal form.
For details, see “Recurring Decimal Calculations”. • 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 the calculation result to recurring decimal
form, fraction form or π form. The ' form of the result will not appear in
this case.
'
2
+ 2) ×
454
1
=
5
5
=
'
3
'
6 + 2'3
1
b
5
= 0.2 b
= 5.913591358 B
0.2
f
5.913591358
f
1{5
f
0.2
'
6 + 2'3
1{5
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
B 2 ' 3 e+ 1 ' 2 =
E-14
7
6
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.
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.
1 = 1
2 2
B 4 -1'(() 3 e 1 c 2 =
<
1
2
)
Percent Calculations
Inputting a value and pressing 1((%) causes the input value to become
a percent.
150 × 20% = 30 150 * 20 1((%)=
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((%)=
30
75
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 $=
Convert 2°15´18˝ to its decimal equivalent.
2 $ 15 $ 18 $=
(Converts sexagesimal to decimal.) $ 2.255
(Converts decimal to sexagesimal.) $ 2°15´18˝
3°0´0˝
2°15´18˝
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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
6
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
Transform the value 123 to engineering notation, shifting the decimal
point to the left.
123 =
1W(←) 0.123×10
1W(←) 0.000123×10
1234
3
0
123
3
6
Calculation History
In the COMP, CMPLX, or BASE-N Mode, the calculator remembers up to
approximately 200 bytes of data for the newest calculation. 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.
2
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 =
14.5
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.
E-16
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
123 + 456 =
789 – 579 = 210
(Continuing) 789 -G=
For T
k+2
from T1 to T5. Note however, that T
T
(Ans = T
T
(Ans = T
T
1
= 1 1 =
2
= 1 1 =
3
= T2 + T
k+1
= T
+ Tk (Fibonacci sequence), determine the sequence
1
= 1 + 1
1
= 1 and T
2
= 1. B
2
= 1, PreAns = T
1
1
= 1)
= 1)
G+SG(PreAns)=
(Ans = T
T
4
= T3 + T
2
= 2 + 1 =
(Ans = T
T
5
= T4 + T
3
= 3 + 2 =
Result: The sequence is {1, 1, 2, 3, 5}.
E-17
3
= 2, PreAns = T
4
= 3, PreAns = T
2
3
= 1)
= 2)
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