EC-4035 ENGINEERING SCIENTIFIC CALCULATOR
OWNER'S MANUAL
Please read before using this equipment
N. TEP EN
Cat. No. 65-983
INTRODUCTION
- Your new Radio Shack EC-4035 Engineering Scientific Calculator is one of the most complete and compact calculators available!
- Your calculator answers problems in anything from basic math to trigonometry, statisitics and complex numbers. It can judge which arithmetic operation must be performed first and lets you use up to 18 parentheses at six levels.
- The calculator saves you time by converting from one unit to another (fraction to decimals, minutes and seconds to degrees, degrees to radians or grads, hexadecimals to decimals, binaries or octals, even volts × amps to watts) whenever you tell it to. It also saves your battery by automatically turning itself off if you don't use it for 6 minutes.
- Your calculator's seven memory registers hold information for later use even after you turn it off.
- We want your EC-4035 to become your problem-solving right hand! Following the examples in this manual is the first step toward that goal.
You don't have to read the entire manual if you're interested only in one operation or procedure. (After all, you don't read the entire cookbook to bake a cake or read every entry in the phone directory to find a number.) We suggest you begin by reviewing the Contents. When you identify an operation you want to perform, turn to that page. There you will find the procedure and other supporting information such as calculation accuracy or allowable input range.
By the way, we didn't intend to make this manual as a tutorial book for mathematics. We assume you need this calculator as an aid to solve the problem at hand. If you are not familiar with the functions built into your EC-4035 and want to know what its application is, your local library is the best source for the information.
© 1987, Tandy Corporation All Right Reserved. Radio Shack is a registered trademark of Tandy Corporation
CONTENTS
| POWER | 5 1. | FOUR BASIC CALCULATIONS | 18 |
|---|---|---|---|
| Batteries6 | 5 | Sign Change | 18 |
| Auto Power-Off 7 | , | Constant | 19 |
| Parentheses | 21 | ||
| Register Exchange (X↔Y) | 22 | ||
| CHIET Kow | Fractions | 22 | |
| MODE Kov | Percentage | 25 | |
| Sign Change 11 | 2. | MEMORY CALCULATIONS | 28 |
| Baranthasas | SVIDE OF | Standard Memory | 28 |
| Pi kov 11 | new brie | Constant Memories | 30 |
| 3. | SCIENTIFIC NOTATION | 32 | |
| Brievity of Coloulations | Calculation Range and Scientific | ||
| Correction Mistokee | Notation | 32 | |
| Correcting Mistakes | Tanoy C | Engineering Mode | 33 |
| Setting Decimal Places (FIX) | ght Res | Unit Mode | 37 |
| Bounding Off (PND) | 4. | BINARY, OCTAL DECIMAL AND | |
| Erroro 10 | HEXADECIMAL | 40 | |
| EIIOIS | Conversion | 42 |
|
Calculation 43
Negatives 45 Logical Operations 46 |
Factorials | |
|---|---|---|
| 5. | DIGITAL NOTATION AND | Permutations/Combinations |
| DEGREE-MINUTE-SECOND | 9. STATISTICAL CALCULATIONS 67 | |
| 6. | ANGULAR MODES 49 | Means & Standard Deviation |
| 7. | COMPLEX NUMBERS | Linear Begression 72 |
| - | Calculations | Logarithmic Regression |
| Arguments, Absolute Values | Exponential Regression | |
| Conjugate Numbers 54 | Power Regression79 | |
| 8. | FUNCTION CALCULATIONS 55 | Gamma Function |
| Irigonometrics Functions | Chi Square Distribution | |
| Logarithms (Exponentiations 59 | CALCULATOR REGISTERS 83 | |
| Squares/Square Roots/ | MAINTENANCE 85 | |
| Cube Roots | SPECIFICATIONS 86 | |
| Powers/Roots | KEY INDEX 88 | |
| Reciprocals 62 | 5 | |
Slide the power switch up to turn on the calculator. Slide it down to turn it off. Even when power is off, the memory contents — both independent and constant — are retained.
Batteries
Your calculator is powered by two CR2032 lithium batteries (Cat. No. 23-162), which provide approximately 350 continuous hours of operation. Replace the batteries when the display becomes dim. We recommend that you replace batteries at least every two years even if you do not use the calculator. Old batteries tend to leak and can damage the calculator. Be sure you replace both batteries. Never mix old and new batteries.
1. Switch the power off.
2. Remove the back cover by loosening the two screws.
Remove the battery compartment cover screw and take out the old batterie
4. Install two new batteries, positive (+) side up.
Dispose of the old batteries promptly. Do not incinerate them or allow children to play with them. They can prove fatal if swallowed.
6. Replace the battery compartment cover.
7. Replace the back cover.
Switch the power on and press the RESET button on the lower back of the unit, using a ballpoint pen or similar object.
Auto Power-Off
If you leave the calculator on, and do not press a key within six minutes, the calculator turns off automatically, thereby conserving the batteries. To restore power, press the key or slide the power switch to OFF and then back to ON.
The display can show a manifisa of up to 10 digits and an exponent of up to 2 digits. Note: Displays for special modes and angular units are explained with the related function. Jater in the manual
On the right side of the calculator is the DISP (display contrast) control. If the display is difficul to read, adjust this control for best contrast. If you cannot adjust the display to a high contrast, the batteries are weak. Replace them immediately.
The display can show a mantissa of up to 10 digits and an exponent of up to 2 digits. Note: Displays for special modes and angular units are explained with the related functions, later in the manual. On the right side of the calculator is the DISP (display contrast) control. If the display is difficult to read, adjust this control for best contrast. If you cannot adjust the display to a high contract, the batteries are weak. Peoplese them immediately.
SPECIAL KEYS
This section describes five special keys that affect the overall operation of the EC-4035. SHIFT Key
To keep your calculator as compact as possible, each key has two or more functions. You can change the main function to the secondary function (printed in brown above the key) by pressing mer first. Press mer, and an (s) appears on the display. Then, press a function key. The function printed above the key is performed, and the (s) disappears from the display. Press mer a second time to cancel.
MODE Key
This key lets you change the operating characteristics of your calculator. There are five calculation modes , three angular unit modes, and four display modes. To place your calculator in one or more of these modes, press mos followed by the appropriate key. An M appears on the display when you press mos .
Enters/exits the Engineering Display mode. (ENG appears/disappears on the display.) In this mode, calculation results are displayed using exponents of 10 that are multiples of 3. See "Engineering Mode," under "Scientific Notation."
- Enters the Unit Calculation mode. UNIT appears on the display, and calculations using seven types of units, such as watts, can be carried out. See "Unit Mode," under "Scientific Notation." In an
- Enters Normal Calculation mode. Pressing The cancels the Unit, Base- n , Complex, Standard Deviation, or Linear Regression mode.
- Enters Base-n Calculation mode. Binary/octal/decimal/hexadecimal calculations or conversions and logical operations can be performed in base-2, 8, 10, or 16. See "Binary, Octal, Decimal, and Hexadecimal."
- Enters Complex Calculation mode. CMPLX appears on the display. See "Complex Numbers."
- ☑ Sets the angular mode, used for trigonometric calculations, to degrees.
-
5 Sets the angular mode to radians.
appears on the display.
- Sets the angular mode to grads. appears on the display.
- Sets the display to show a specified number of decimal places. FIX is displayed. See "Setting Decimal Places," under "General Information."
- E Sets the display to show the specified number of significant digits. SCI is displayed. See "Setting Significant Digits," under "General Information."
9 Cancels the FIX or SCI setting.
- Enters Standard Deviation Calculation mode. SD is displayed. See "Means and Standard Deviations," under "Statistical Calculations."
- Enters Linear Regression mode. LR is displayed. See "Regression Analysis," under "Statistical Calculations."
Sign-Change Key
Press the 🔁 key to change the sign of the displayed value. Press it after pressing 🖾 to change the sign of the exponent.
Parentheses
If you want the EC-4035 to perform a calculation normally of a lower priority before performing another, place the lower-priority calculation in parentheses. You can have up to six levels of parentheses (parenthetic expressions within parenthetic expressions). The number of parentheses is displayed.
Pi Key
To enter the value pi (the ratio of circumference to the diameter of the circle), press e without entering any number. The value of pi (to 9 decimal places) is placed on the display.
GENERAL INFORMATION
Priority of Calculations
Your EC-4035 observes true algebraic logic. This means that it performs calculations in the following order:
- ermost. For example, assume you enter:
-
- The calculator performs the calculations in the following order:
-
7×3
The displayed result is 21
- 2. Immediate functions (functions that immediately affect the value in the display), such as x2, x!, sin, and cos
- 3. Two-value functions, such as xn, P → R, nPr, and so on. You must press = to complete the function, if no backa a cracka lemper P of a to every efficiency and proceed and the
Multiplication, division Addition, subtraction AND
7. OR, XOR, XNOR
Operations of the same priority are performed in the order of input.
Correcting Mistakes
If you press the wrong number key, press , and enter the correct number. The previous calculations remain intact, and you can carry on the calculations. Or you can correct the last digit entered by pressing . The last digit on the display is erased, and the display shifts to the right one place.
If you press an incorrect immediate function key, you must re-enter your calculation. For example, suppose you want to calculate the answer to 3 + 4 × 5, but you make a mistake
3+4-×5=35 (wrong answer)
When you mistakenly enter instead of , because the inaction has same priority level as , the calculator performs the addition first (7). Then, it waits for input of the value to be subtracted. The addition having already been done, the multiplier is applied to the result of addition (7×5=35), instead of to the value 4 (4×5+3=23).
If you want more information about the internal workings of the calculator and why they cause an incorrect result under such circumstances, see "Calculator Registers," at the back of the manual.
Setting Decimal Places (Using FIX)
Use the FIX function to specify the number of digits to be displayed after the decimal point. The calculator continues to calculate using the full 12 digits even though it displays only the number of digits you specify.
Press me I followed by the number of digits (0—9). FIX appears on the display, and displayed value is rounded to the number of digits you specify. To cancel this function, press me 9.
(rounded off to two decimal places) (cancels the setting)
Setting Significant Digits (Using SCI)
The SCI function is similar to FIX, but SCI specifies the total number of significant digits to display. The calculator continues to use up to 12 digits for calculating, even though the display shows only the number of digits you specify.
Press [mon ] followed by the number of significant digits (0—9). SCI appears on the display, and the displayed value is rounded off to the number of significant digits you specify. To cancel, press [mm] .
Example: 614B.0056 109642.8571 (rounded off to 3 significant digits
Rounding Off (Using RND)
As mentioned above, even though you specify the number of digits to display, the calculator continues to use 12 digits for the calculations. To set the number that the calculator to be exactly equal to the number in the display when using the FIX or SCI mode, press mmm.
Errors
When a calculation or the result of an operation exceeds the calculation range, an error code is displayed, and you must correct the error to continue.
Ma ERROR
This error is shown if one of the following conditions occurs. Press 📧 to clear the error. Then start the calculation again.
- •The result intermediate or final or the memory content exceeds the value ±9.9999999999 × 1099.
- •You input a number outside the input range for a function calculation. See each function description for the allowable input range.
- You attempt an improper operation.
- Trying to determine average or standard deviation without inputting data in Standard Deviation or Regression Calculation mode.
- •Try a conversion the result of which overflows the display capacity in Base-n mode.
- •Trying to obtain trigonometrics of an imaginary number in Complex Calculation mode.
Syn ERROR
- You get a syntax error under the following circumstances. Press I and re-start the calculation from the beginning.
- •In standard deviation or regression calculation, you pressed the IMMA, INE or IMMA key before completing the pending calculation (except IMMA to enter multiple data).
- •You pressed 🖻 for an imaginary number in the Complex Calculation mode.
() ERROR
This error occurs if the nesting level exceeds six or if you use more than 18 consecutive open parentheses. Press I to clear the error. The display returns to the value input immediately before the error, and you can continue calculation. Or press I and begin the calculation again.
1. FOUR BASIC CALCULATIONS ( + - × ÷ )
Select the normal calculation (COMP mode) by pressing I. Calculations are performed in the same sequence as the written formula designates. And you can nest up to 18 parentheses at six levels. The calculation range allows 10 digit mantissa plus a 2-digit exponent up to 10±99.
| EXAMPLE | OPERATION | READ-OUT |
|---|---|---|
| 23+4.5-53=-25.5 | 2384.58538 | -25.5 |
| 7×8 - 4×5 (=56-20) = 36 | 72884258 | 36. |
Sign Change of the displayed value. Press it after pressing
the sign of the exponent of a segmed of the
| EXAMPLE | OPERATION | READ-OUT |
|---|---|---|
| 56×(-12)÷(-2.5)=268.8 | 56×12₩ ₩ 2.5₩ ₽ | 268.8 |
Constant Press one of the four basic calculation keys (+, -, ×, ÷) twice to store the displayed value as a constant. K appears on the display to indicate that a value is stored as a constant
| EXAMPLE | 8 | OPERATION | READ-OUT |
|---|---|---|---|
| 3 +2.3 =5.3 | 2.30038 |
к
5.3 |
|
| 6 +2.3 =8.3 | 68 | к 8.3 | |
| 7 -5.6 =1.4 | 5.68878 | к 1.4 | |
| -4.5 -5.6 =-10.1 | 4.5₺ 🗖 | к –10.1 | |
| 2.3 ×12 =27.6 | 12××2.3= | × 27.6 | |
| (-9) ×12 =-108 | 9 🛃 🖬 | к –108. | |
| 74 ÷2.5 =29.6 | 2.588748 | × 29.6 | |
| 85.2 ÷2.5 =34.08 | 85.2 | к 34.08 |
| 1.7 🗙 🗙 🖨 | к 2.89 | |
|---|---|---|
| 1.7 3 =4,913 | 8 | к 4.913 |
| 1.74=8.3521 | 8 | * 8.3521 |
| 3×6 ×4=72 | 3 × 6 × × | к 18. |
| 3×6 ×(-5)=-90 | 48 | к 72. |
| 5 妃 🗖 | к –90. | |
| .6-8,810.1 | ||
|
56
(×(2+2)) = 2.8 |
4 🗙 ((2 🕂 3 )) 🛱 🖶 | к 20. |
| 4~(2+3) | 56 🖨 | к 2.8 |
|
23
4×(2+3) =1.15 |
238 | к 1.15 |
Parentheses
When you want to perform a calculation of lower priority before one of higher priority, enclose the lower-priority calculation in parentheses. The number of parentheses is displayed
| 2×{7+6×(5+4)}=12 | 2 | 2 × (() | (01 | 0. |
|---|---|---|---|---|
| 7 + 6 × 🛈 | (02 | 0. | ||
| 5 - 400 = | 122. | |||
| 2- | 314,50 | |||
| APROVER SEALS | parentheses if they o | come immediately be | efore the | E key. |
| ou can omit the closing | g parentheses if they o |
come immediately be
OPERATION |
efore the | E key. |
|
You can omit the closing
EXAMPLE 10-{7×(3+6)} = -53 |
parentheses if they of the set of |
Come immediately be
OPERATION |
efore the | ■ key. AD-OUT -53. |
Register Exchange (X↔Y)
[SHIT] [X-Y] exchanges the displayed number (X register) with the contents of the working register
| EXAMPLE | OPERATION | READ-OUT |
|---|---|---|
| 7.4 | 1.2324.56228 | 2.8044 |
| 1.23×4.56÷2 | 7.4 SHIFT X-Y | 2.638710598 |
| 10.5 | 21 🖬 7.8 🖬 🗌 | 2.692307692 |
| 21÷7.8 | 3.9 |
You can enter fractions such as 33/4 as they are written instead of having to convert them to improper fractions. Enter the integer part, press 2. enter the numerator, press 2. and
Note that the slash takes one digit on the display. This limits the range of a input fraction to a total of eight digits. If the calculation's result exceeds this limit, the answer is automatically shown in decimal.
If you want the answer displayed in decimal form, press a after the answer is obtained. Pressing again converts the answer back into a fraction. Note: You cannot convert a decimal answer to a fraction.
2 國 4 國 5 日 3 國 4 日 3/11/20 3 55 1 國 1 國 2 日
| =14925000 | 1.517 7 2.5 1 6 | ×3ॡ100日 | 14925000. |
|---|---|---|---|
| When you enter an operation a proper fraction reduced | tor or press 🖬 , the entere | ed fraction is au | tomatically converted to |
| EXAMPLE | rswer in a traction | OPERATION | READ-OUT |
| 456 11 - | COPERATION 3 | 國456國78 | 3/456/78. |
| 3 78 =8 13 (Reducti | on) | 8 | 8/11/13. |
| Or you can make it an im | proper fraction by pressi | NG SHIFT de. | |
| Countinuing from abo | VE SHIFT d/c | 115/13. | |
| If any operand is decima | I, the answer is shown in | decimal form. | |
| 41 | 41 🕸 52 🗙 | 41/52. | |
|
52×78.9=62.20961 |
1538 | 78.9日 | 62.20961538 |
Percentage 3P MOITAR390 BJ9MAX3 To find the percentage of a number, enter the number first, then press ☑, the percent, and 5000 ☉, For the percent increase on the answer (markup), press ☑ after 5000 ☉. For the percent reduction (discount), press ☑. Set of the percent increase on the answer (markup), press ☑ after 5000 ☉. For the percent reduction (discount), press ☑.
| EXAMPLE | OPERATION | READ-OUT |
|---|---|---|
| What is 12 % of 1500 180 | 1500 12 SHIFT 😪 | 180. |
| What percent of 880 is 660? |
660 🖶 880 SHIFT % |
75. |
|---|---|---|
| 216 | 1896 of 1200 | |
| Increase 2500 by 15% |
2500 15 5811FT 😪 🛨 |
2875. |
| EXAMPLE | OPERATION | READ-OUT |
|---|---|---|
| 300cc are added to a 500cc solution. What is the percent of the new volume to the old | 300 + 500 SHIFT % | 160. |
| volume? | (%) | |
| f you made $80 last week and $100 this | 100 - 80 SHIFT % | 25. |
| week, what is the percent increase? | 1 081 July 1 | (%) |
| Use constants to calculate: | 1200 🗖 12 SHIFT 🚱 🖡 | |
| 12% of 1200 | 18 SHIFT % | 216. |
| 23% of 1200 276 | 276. | |
| 26% of 2200 | 26 🗙 🗶 2200 SHIFT 😼 📕 | 572. |
| 26% of 3300 | 3300 SHIFT % | 858. |
| , |
What percent of 192 is 30? What percent of 192 is 156?
600g is added to 1200g. What percent is the total weight to the initial weight? 1200 + + 600 ₪𝑘 𝔅 150. 510g is added to 1200g. What percent is the total weight to the initial weight? 510 ₪𝑘 𝔅 142.5
How many percent less is 138g than 150g? 150 Image: 138 smill test How many percent less is 129g than 150g? 129 smill test
2. MEMORY CALCULATIONS Standard Memory
Standard memory is the independent memory available on most calculators. The calculation range allows a 10-digit mantissa and a 2-digit exponent up to 10±99. The memory keys function as follows:
(memory in) ..... stores the displayed value into memory, clearing the previous contents. (memory add) ..... adds the displayed value or the result of a pending calculation to the value in memory.
[SHIFT] M-(memory subtract) ... subtracts the displayed value or the result of a pending calculation from the value in memory.
Image: [memory recall] ..... recalls the contents of memory to the display. Image: [memory exchange] ..... exchanges the displayed value (X register) and the contents of memory (memory register).
When a value is stored in memory, M appears on the display. The contents are preserved even after power is switched off. To clear the memory contents, press
| MPLE | OPERATION | READ-OUT | |
|---|---|---|---|
| +6= 59 | 53868 | 59. | |
| -8= 15 | 23 8 8 4 | M 15. | |
| ×2=112 | 56×2⊪ | M 112. | |
| 210.75 | recall. The number stor | 9984 | M 24.75 |
| MR | 210.75 | ||
| 7112221112 | the second se | ||
| 1+ (2×3) + (2 | (×3) + (2×3) - (2×3) = | =19 | rego eno vino tasio o |
| ( 19fts neve bev |
2×3) + (2×3) - (2×3) =
7 Mm M+ Shift M- 2 |
= 1 9
| 3 m+ shift m- mr |
Ma-1) 19.19. |
| 2 ×3 = 36 |
(×3) + (2×3) - (2×3) =
7 ₩ ₩ SHFT ₩ 2 ¥ |
=19
3 MH SHIFT M- MR 3 X X 12 E Mm |
м
19. |
|
2
×3
= 36
5 ×3 =135 |
×3) + (2×3) - (2×3) =
7 ₪ ₪ SHT ₪ 2 ⊠ ИОПТАЯЗЯО |
=19
3 HH SHIFT HH HR 3 X X 12 E HH 4 5 SHIFT HH |
м 19.
км 36. км 135. |
|
2×3= 36
3×3=135 3×3=234 135 |
=19
3 MH MH SHIFT M- MR 3 X X 12 E Mm 4.55HIFT M- 78MH |
м 19.
км 36. км 135. км 234. |
Constant Memories MortAR390
- There are six constant memories. Use them to store numbers you use often in your calculations
-
Kin (constant in) ..... Kin appears on the display. Press a number key 1—6 to select the constant memory to use. The calculator stores the displayed value into that memory 1 to 6, clearing the previous contents.
- Kout appears on the display. Press a number key 1—6 to select the constant out) ....................................
- SHIFT KAC ..... clears all constant memories.
- To clear only one constant memory, press , Kin, and then the number of the memory you wish to clear (1—6). The contents of constant memories are preserved even after you turn off the calculator.
| EXAMPLE | 3 551266 | OPERATION | READ-OUT |
|---|---|---|---|
| 193.2 ÷23=8.4 | 193.2 Km 1 23 2 | 8.4 | |
| 193.2÷28=6.9 | Kout 1 = 28 = | 6.9 | |
| 193.2÷42=4.6 | Kout 1 🖶 42 日 | 4.6 | |
| 20 |
You can perform arithmetic calculations on the contents of the constant memories. Press the appropriate operator key before pressing the memory location number. That is, press Kin and the displayed value to Constant Memory 1. The displayed value is not affected.
OPERATION
EXAMPLE
AD-OUT
3. SCIENTIFIC NOTATION Calculation Range and Scientific Notation
-
(1) The minus (-) sign for mantissa
- The minus (-) sign for exponent
display is read: -1.23456789×10-99
ific notation, enter the mantissa, press 📴, and then e enter a value using scient exponent.
EXAMPLE
-1.23456789×10-3 (=-0.00123456789
Engineering Mode
To change the displayed number so that it is shown with exponents of 10 that are multiples of 3, use the e or key. Converts the displayed number to smaller units and converts to larger units.
You can also use the Engineering mode. In this mode, the unit symbol appears instead of the exponent of 10.
To select the Engineering mode, press [1]. ENG appears on the display. To exit the Engineering Mode, press [1] again. ENG disappears from the display.
| Unit | Unit symbol | Unit | Unit symbol |
|---|---|---|---|
| 10 3 | k (Kilo) | 10 -3 | m (Milli) |
| 00°10° | M (Mega) | 10 -6 | μ (Micro) |
| 10 9 | G (Giga) | 10 -9 | n (Nano) |
| 10 12 | T (Tera) | 10 -12 | p (Pico) |
| 1015 | P (Peta) | 10 -15 | f (Femto) |
| 10 18 | E (Exa) | 10 -18 | a (Atto) |
In this mode, normal calculation results can also be shown with a unit symbol. To enter a value using the unit symbol, use the E key, followed by the unit symbol key (printed in black under the function keys).
| 9 ÷ 10 = 0.9 = 900m | n (milli) | 98108 | 900. m |
|---|---|---|---|
| (Continuing) | 0.9 | ||
| (Continuing) 🔤 | 900. m |
When the result is outside the range of the symbol display, the calculator uses exponential display.
1E (exa) × 1000 = 1021
Note: You cannot use unit symbols for fractions.
00@@@6@@@@ 600.n
Unit Mode
In this mode you can perform calculations in terms of 7 units common to the field of electrical engineering (watts, ohms, and so on). To select the Unit mode press me . UNIT appears on the display. To exit Unit mode select any other mode (except ENG). To enter a unit, press me, followed by the unit's symbol (0—6). The symbols are printed in black below the keys.
| Name | Symbol | Definition | |
|---|---|---|---|
| Electrical potential, volts | V | ||
| Electrical conductivity, amperes | A | ||
| Time, seconds | S | TRACTING THE PROPERTY OF | |
| Power, watts | W | 1W = 1V•A | |
| Electrical capacitance, farads | F | 1F=1A.S.V -1 | Desired |
| Quantity of electricity, coulombs | С | 1C=1A.S | Derived |
| Electrical resistance, Ohms | Ω | 1Ω = 1V • A -1 | n James All a |
Calculations involving the derived units are performed in the following order
- 1. W (watts) 2 F (farads)
- 3. C (coulombs)
- 4. Ω (ohms)
- 5. V, A, S (volts, amps, seconds
The unit can be raised to ±5th power. (The power must be an integer.) If the calculation's result exceeds this limit, or if the power becomes a fraction, the subsequent calculation is carried out without the unit symbols.
You cannot store the unit symbol in memory. Only the numeric values are stored. You can use the unit symbols in combination with the engineering symbols. EXAMPLE OPERATION READ-OUT
5A (amperes) + 6A (amperes) = 5 m ↑ ■ 6 m ↑ ■ 11. A 11A (amperes) 12V (volts) × 5A (amperes) = 60W (watt) 12 m ♥ × 5 m ↑ ■ 60. ₩
4. BINARY, OCTAL, DECIMAL AND HEXADECIMAL You can perform binary, octal, decimal and hexadecimal calculations and conversions by placing the EC-4035 in the Base-n mode To select the Base-n mode press me DEC HEX BIN or OCT appears on the display To exit the Base-n mode, select an mode other than ENG. To select the base, press the mind, mind or mind key on the top row of the keyboard. BASE DIGITS 12 Positive : 0 ≤ x ≤ 11111111111 Positive : 0 ≤ x ≤ 17777777777
Decimal 10 Positive : 0 ≤ x ≤ 2147483647 Negative: -2147483648 ≤ x ≤ -1
Hexadecimal 8 Positive : 0 ≤ x ≤ 7FFFFFF Negative: 80000000 ≤ x ≤ FFFFFFF
Valid values:
| BASE | VALUES | |
|---|---|---|
|
Binary
Octal Decimal |
0, 1
0, 1, 2, 3, 4, 5, 6, 7 0, 1, 2, 3, 4, 5, 6, 7 |
|
| Hecadecimal | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F | |
| *Values other | than noted above cannot be entered while each | respective base is in effect. |
The keys used in this mode have their function names printed in green below them. As you might have noticed, the advanced function keys do not operate in this mode (even if you set the base as decimal). Memory and parentheses calculations can be performed, as well as the four basic calculations.
You cannot enter decimal fractions in this mode. If the calculation's result causes a fraction, the calculator automatically rounds the fraction to an integer.
Copyrement of 3400000000 to #34000000000 0 -536870812
Conversion OPERATION READ-OUT EXAMPLE OPERATION READ-OUT Imme 2 (BASE-n mode) Imme 2 (BASE-n mode) Imme 2 (BASE-n mode) Conversion of 2210 to binary Imme 2 (BASE-n mode) Imme 2 (BASE-n mode)
mains and another to hexadecimal
Conversion of 205010 to binary 2050 Ma ERROR Conversion may sometimes be impossible if calculation range of original value is greater than range of result value.
26.
16.
Conversion of 7FFFFFF16 to decimal Image: 7FFFFFFI6 2147483647. Conversion of 340000000008 to decimal Image: 340000000006 -536870912.
|
334.
516. 390. |
|
|---|---|
|
516.
390. |
|
| 390. | |
| 390. | |
| 390. | |
| (DEC) | 010 |
| 912. | |
| 15604. | |
| HEX | 3CF4. |
| 638 | 982. |
| 118 | 111110. |
| 32462. | |
| 2B16×CD16=226F16 | 226F. | |
|---|---|---|
| 2B16×5810=249410 | DEC 58 🖬 | 2494. |
| 2B16×638=42218 | @ 63 E | 4221. |
Negatives
To obtain a negative value, press . The two's complement of the value on the display is produced for binary, octal, and hexadecimal numbers.
| EXAMPLE | OPERATION | READ-OUT |
|---|---|---|
| 63. | (BASE-n mode) | 23s08 61s=63s |
| Negation of 10102 | BIT OT THE BOOK STORE BIN 1010 NEG | 111111110110. |
| Conversion to decimal | DEC | -10. |
| Negation of 12 | BIN 1 KG | 111111111111 |
| Negation of 28 | 3777777776. | |
| Negation of 3416 | HEX 34 NEG | FFFFFCC. |
|
Logical Operations
Use the 📖 , cm , 🛲 , xxx, and 🔤 keys |
to perform logical opera | ations. |
|---|---|---|
| EXAMPLE | OPERATION | READ-OUT |
| 1916 AND A16=1816 | mode) | 18. |
| 11102AND 368=11102 | BIN 1 0 AND OCT 36 E | 16. |
| BIN | 1110. | |
| 2380R 618=638 | @ 23@ 61 E | 63. |
| 12016 OR 11012=12D16 0101 | EX 1200R BIN 1101 | 100101101. |
| HEX | 12D. | |
| 516 XOR 316=616 | HEX 5 KOR 3 E | 6. |
| 2A16 XNOR 5D16=FFFFFF8816 | HEX 2A XNOR 5D | FFFFF88. |
| 10102 AND (A 16 OR 7 16) BIN 101 | Α. | |
| =10102 | BIN | 1010. |
| 1A16 AND 2F16 | HEX 2 F AND AND 1 A E | A |
|---|---|---|
| 3B16 AND 2F16 | 2B. | |
| Not of 1011010 | BIN 10110 | 111111101001. |
| Not of 12348 | 0008100 CT 1234 M | 3777776543. |
| NOT OT 2FFFED16 | FFD00012. | |
5. DIGITAL NOTATION AND DEGREE-MINUTE-SECOND NOTATION
The EC-4035 allows you to enter angle and times measurements in the units you usually use to measure them (degrees/hours, minutes, and seconds). It uses a decimal system to perform the calculations. Then, it displays the result in digital notation, which you can have it convert to DMS (degree-minute-second) notation.
Use the end and the keys. To enter a value using DMS notation, enter the degree (or hour), press end, enter the minute, press end, and enter the second and press end. As you enter the value, the calculator automatically converts to digital notation.
To change the value on display to DMS notation, press SHIFT
| EXAMPLE | OPERATION | READ-OUT |
|---|---|---|
| 14°25′36″=14.426666667° | 14 📼 | 14. |
| 25 - | 14.41666667 | |
| 36 | 14.42666667 |
SHIFT 14°25′36."
6. ANGULAR MODES
You must set the angular mode you wish to use for trigonometric functions, polar/rectangular coordinate conversions, and when obtaining the argument of the complex number.
Setting the angular mode: Press (1990) (1) if you are using degrees. Press (1990) (5) for radians. Press (1990) (6) for grads.
D, R or G appears on the display to tell you which mode you are now in.
Conversions
You can convert a displayed value from one angular unit to another: Press [suff] [weig] to convert to degrees. Press [suff] [weig] to convert to radians. Press [suff] [weig] to convert to grads.
Note: To enter the value of pi for calculation in radians, press B before entering any number.
ss tul after entering the imaginary part of the number
7. COMPLEX NUMBERS To select the Complex Number mode, press Imm I. CMPLX appears on the display. To exit the Complex Number mode, select any other mode (except ENG). Calculation Range: *Addition/subtraction *Division
A ± C | < 10100 |A ± C | < 10100 |B ± D | < 10100 |BD | < 10100 *Multiplication |AC + BD | < 10100 |AC | < 10100 |BC | < 10100 |AC | < 10100 |BC | < 10100 |BD | < 10100 |BC | < 10100 |BD | < 10100 |BC - AD | < 10100 |BC | < 10100 |BC - AD | < 10100 |BC + AD | < 10100 |BC + AD | < 10100
Calculation Limits: Nesting of up to 12 levels, parentheses of up to 4 levels. The keys that have a special function in this mode have purple lettering above them. Press ① after entering the imaginary part of the number. 50
| EXAMPLE | OP | ERATION | READ-OUT |
|---|---|---|---|
| 1.23+4.56 i = | MODE 3 (CMPLX mode) | 1.23 🖬 | 1.23 |
| 1.23+4.56 i | 4.56 i | 4.56 i | |
| 8 | 1.23+4.56 i | ||
|
The pending value or the
1.2×10 14 +3.4 i = |
result of the calculation is | displayed a | as far left as possible. |
| 1.2×10 14 +3.4 i | 11 2614 | ||
| - | 1.2E14 |
Displayed exponents are preceded by an E.
You can use fractions, unit symbols, and advanced functions in this mode. If you attempt to use a trigonometric function when the current value includes an imaginary portion, Ma ERROR is displayed.
0.015375+0.0571
| 2/5 i = 2/5 i | 이 [ ^ 8 5 [ ] = | 2⁄5.i |
|---|---|---|
| 5K i =5K i |
8 6 5 .
MODE: • 5 SHIFT 5 @ (* i 8 |
5.ki |
| Calculations | ||
| the same as in real number-only of OPERATION | READ-OUT | |
| 12 i -34 i =-22 i | -22. i | |
| 8×2 i -18÷3 i =22 i | 82121218312 | 22. i |
|
If the result of a calculation be
on the display. Press a to Press SHIFT to shift it to the |
ecomes too long to be shown on the
shift the display left so that you car right. |
display, an arrow appear
see the rest of the result |
| (1.23+4.56 i )÷80= | @1.23₽4.56 (1)) ₽ 80₽ | 0.015375+0.057* |
| 0.015375+0.057 i | *0.15375+0.057 i | |
| 52 |
Arguments, Absolute Values Use the I key to obtain the argument (or amplitude) of a complex number. Verify or change the angular mode before pressing I. Press I to obtain the absolute value (modulus). If you are going to find both the argument and absolute value of the complex number, first store the value into memory by pressing I. Now press I to determine the argument. Press If to recall the complex number to the display, and press I to find the absolute value. When you press either the I or I key, the original complex number is cleared from the display. EXAMPLE OPERATION
| EARIVIFLE | of minimum | |
|---|---|---|
| How many degrees is the argument of 5 + 8i? |
MODE 3 (CMPLX mode)
MODE 내 (DEG) 5+8 i 8 @ |
57.99461679 |
| How many radians is the argument of 3.2 – 4.8 i ? | MODE 5 (RAD) 3.2 4.8 i arg | -0.9827937233 |
| What is the absolute value of 7 + 4 i ? | 7 + 4 i = 12 | 8.062257748 |
Note: You cannot convert the polar coordinate value to a complex number on this calculator. (In other words, you cannot obtain the complex number by giving an argument and absolute value.)
Conjugate Numbers
Press eng to obtain the conjugate number of the complex number.
| EXAMPLE | imun xelqmoo | OPERATION | READ-OUT |
|---|---|---|---|
| What is the conjugate complete of 8+5 i ? | x number | 8 + 5 i = conjg | 85. i |
| What is the conjugate comple: | × 3×0 | 4 - 6 i )) - conig | 12.+18. i |
| ······································ | low many radians is the stroument of 3.2 - 4.87 ? | ||
8. FUNCTION CALCULATIONS
Function calculations are performed only in the COMP mode (mediation) unless otherwise noted. Some functions require time for calculation. Do not press any key while a calculation is in progress. (The display goes blank during calculations.)
Trigonometric Functions Calculation Range and Accuracy
sin x/cos x/tan x |x| < 9×109 deg (5×107π rad 1×1010 gra) ±1 in the 10th digit sin-1x/cos-1x |x| ≤ 1 - ... tan-1x |x| < 10100 - ... -
EXAMPLE OPERATION READ-OUT sin (π/6 rad) = 0.5 "RAD" (MORE E) 0.5 "DEG" 0.5 "DEG" cos 63°52'41"= (MORE L) 63.87805556 0.4402830847 0.4402830847
tan (-35gra) = -0.6128007881 "GRA" (₩₩ E) 35 % m -0.6128007881 2•sin 45°× cos 65° = 0.597672477 "DEG" 2⊠ 45 ₩ ⊠ 65 ₩ E 0.597672477
sin-1 1/2 = 30° "DEG" 2 SHIFT 1/2 SHIFT init 30. = 0.5235987756 rad. "RAD" SHIFT MODE IS 0.5235987756. = 33.3333333333333333333333333333333333
After SHIFT MORE, specifying ut through converts the currently displayed value to the cor responding angular unit.
cos-1√2/2=0.785398163rad "RAD" 2 C
tan-1 0.6104 = 31.39989118° "DEG" .6104 SHET III 31.39989118 = 31° 23' 59.61″ SHET III 31° 23' 59.61″
|
EXAMPLE
sinh 3.6=18.28545536 tanh 2.5=0.9866142981 |
2.5 hyp tan | 0.9866142981 | ||
|---|---|---|---|---|
| 3.6 Mplsin | 18.28545536 | |||
| OPERATION | READ-OUT | |||
| hyp appears on the | e displ | ay when you press 🖻 | ||
| tanh -1 x | | x | | < 1 | 88 0 = 77 Will svice | |
| sinh -1 x | < 5 × 10 99 | cosn - ( 75 )=0.795 | ||
| tanh x |x| < 10 100 | - "- | |||
| sinh x /cosh x | | x | | ≦ 230.2585092 | ±1 in the 10th digit | |
| Calculation Range | and A | ccuracy | ||
| Hyperbolic Fund | ctions | |||
| = 27°17′17.41 | 6.2" | SHIFT | 27°17′17.41″ | |
| sin -1 0.8 - cos - | 10.9 | "DEG" .8 SHIFT | 27.28816959 | |
| Logarithms/Exp | onentiations | ||
|---|---|---|---|
| Calculation Range | and Accuracy | ||
| log x/ln x | ±1 in the 10th digit | ||
| e x | - 10 100 < x ≤ 230.2585 | 092 | Squares, Square Rool |
| 10 x | - 10 100 < x < 100 | ||
| EXAMPLE | + | OPERATION | READ-OUT |
| log 1.23 (=log 1 | 0 1.23) = 0.08990511144 | 1.2309 | 0.08990511144 |
| In 90 (=log e 90 | 0) =4.49980967 | 90 In | 4.49980967 |
| log 456÷ln 456 |
5=0.4342944819
456 M |
0 109 🗧 MR In = | 0.4342944819 |
| 10 1.23 =16.982 | 43652 | 1.23 (SHIFT) 102 | 16.98243652 |
| e 4.5 =90.01713 | 4.5 SHIFT @2 | 90.0171313 | |
| 59 |
100.4+5· e -3=2.760821773
.4 SHIFT 103 - 5 3 🛠 SHIFT @ 🗖 2.760821773
Squares/Square Roots/Cube Roots Calculation Range and Accuracy
| 0 ≤ x < 10 100 | ±1 in the 10th digit | |
|---|---|---|
| 3 √ x | |x| < 10 100 |
og 1
|
| x 2 | |x| < 10 50 | — ,, — |
| EXAMPLE | OPERATION | READ-OUT | |
|---|---|---|---|
| 2+13×15=5287196909 | E 207100000 | 1 |
123+302=1023 123 ■ 30 SHIFT 2 ■ 1023.
3√5 + 3√-27 = -1.290024053 5 [SHIFT ]? = 27 6/2 [SHIFT ]? = -1.290024053
Powers/Roots Calculation Range and Accuracy
| x y | ( x > 0 → -1 × 10 100 < y · log x < 100 | ±1 in the 10th digit |
|---|---|---|
| } x = 0 → y > 0 | — · — | |
| ( x < 0 → y:integer or ± 1/2n + 1(n:integer) | _ ,, _ | |
| x 1/y ( y √x) | ( x > 0 → y ≠ 0, -10 100 < 1/y · log x < 100 | |
| } x = 0 → y > 0 | ||
| ( x < 0 → y : odd number or ± 1/n | ||
| (n: Integer) | - // |
| EXAMPLE | OPERATION | READ-OUT |
|---|---|---|
| 5.6 2.3 =52.58143837 | 5.622.3 | 52.58143837 |
| 123 1/ (= 7 √123) = 1.988647795 | 123 SHIFT 2378 | 1.988647795 |
|
(78-23)
-12
=1.305111829×10 -21 |
((78 - 23)) 2 12 ₩ = | 1.: | 305111829 -21 |
|---|---|---|---|
| *x y and x 1/y , can be registered as | a constant. | ||
| 4 2.5 =32 | 2.52248 | к | 32. |
| 0.16 2.5 =0.01024 | .16 🗖 | к | 0.01024 |
| 9 2.5 =243 | 98 | К | 243. |
|
Reciprocals
Calculation Range and Accuracy |
|||
| 1/x | x ≠ 0 | 1000 to 1000 | 1 in the 10th digit |
| EXAMPLE | OPERATION | 1 | READ-OUT |
| 國7篇 1.988647795 | |||
| 30 | SHIFT 1/x 🗖 4 SHIFT 1/x 🛢 SHIFT 1/x | 12. |
Factorials Calculation Range and Accuracy (x; integer) ±1 in the 10th diait ODERATION EXAMPLE 8!(=1×2×3×·····×7×8) = 40320 40320. Bandom Numbers SHIFT RAN# Rectangular/Polar Coordinates POL → REC deg (5 × 107π rad, 1010 gra) |r| < 10100
6
Formula: r = √x2 + y2 θ = tan-1 y/x (-180° < θ ≤ 180°) Ex.) Find the length r and angle θ in radian when the point P is shown as x = 1 and y = √3 in the rectangular co-ordinates.
Formula: x=r·cosθ (Formula: x=r·cosθ) Formula: x=r·cosθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r·sinθ) Formula: y=r·sinθ (Formula: y=r·sinθ) Formula: y=r
Obtain the values of x and y when the point P is shown as θ = 60° and length r = 2 in the polar co-ordinates.
Permutations / Combinations Calculation Range and Accuracy n ≥ r nPr/nCr 0≤r, n < 1010 (n, r:positive integer) ±1 in the 10th digit
9. STATISTICAL CALCULATIONS and the boot of a state of the boot (1.3
In statistical calculations, the various calculation results are stored in constant memories. If you have stored a value in any constant memory, it is changed after a statistical calculation. To avoid any errors, always press IIII IIII IIIIIIIIII
Means and Standard Deviation
To select the Standard Deviation mode, press me . SD appears on the display. To exit the Standard Deviation mode, select on of the other calculation modes.
Entering Data
Enter the data, and press MAA . (also long double
Obtaining Answers
Press [SHF] Zoo to obtain the sample standard deviation of the entered data. Press [SHF] Zoo obtain the population standard deviation. Press [SHF] [Z] to obtain the arithmetic mean. Press [SHF] [Z] to obtain the number of data items entered. Press [SHF] [Z] to obtain the sum of the data items entered. Press [SHF] [Z] to obtain the sum of the squares of the data.
To enter the frequency of data, use the key. Example The finished diameters of rods were found to be dispersed in the following manner: Group Median Frequency 1 8.1 9 2 8.2 19 3 8.3 28
Obtain the standard deviation and arithmetic mean
8.4
X 120ATA 8.5 Standard deviation SHITIZE Arithmetic mean SHITIZE 8.285333333
Correcting Mistakes
Press if you discover your mistake before you press in . Then enter the correct number(s). You can use it to correct the last digit. If you discover a mistake immediately after pressing in , press in . This deletes the last piece of data that was entered. To delete incorrect data that you entered several steps ago, enter the incorrect data again
and press SHIFT DEL .
Example
Find n , x , and o n -1 based on the data: 1.2, -0.9, 2.7, 6.
Regression Analysis
By using the linear regression formulae built into your calculator, you can do linear regression, logarithmic regression, exponential regression, and power regression.
Linear Regression
To select the Linear Regression mode, press me . LR appears on the display.
Formulae: B =
r = n · \(\Sigma xy - \(\Sigma x · \Sigma y)) \[\sqrt{\{n · \(\Sigma x^2 - (\(\Sigma x))^2\}\}\]\{n · \(\Sigma y^2 - (\(\Sigma y))^2\)\}\]
Linear regression y = A + Bx Logarithmic regression y = A + B lnx Exponential regression y = AeBx or lny = lnA + Bx Power regression y = AxB or lnx = lnA + Blnx
Entering Data
Enter the x data, and press 2003. Then, enter the y data, and press 1011.
Obtaining Answers
| Press these keys | To get these answers | |
|---|---|---|
| [Kout] [Σx 2 ] | Sum of the squares of x | |
| Kout [2x] | Sum of x | |
| Kout n. | Number of data | |
| [Kout] Σχ 2 ] | Sum of the squares of y | |
| Kout [27] | Sum of y | |
| Kout [Xxy] | Sum of the products of data | |
| Mean of x | ||
| SHIFT XOn | Population standard deviation of x | c i |
| SHIFT XOn.1 | Sample standard deviation of x | |
| Mean of v | ||
| SHIFT YON | Population standard deviation of y | 30 |
| SHIFT Jon | Sample standard deviation of y | |
| SHIFT A | Constant term | |
| SHIFT B | Regression coefficient | |
| SHIFT P | Correlation coefficient | |
|---|---|---|
| SHIFT 2 | Estimated value x | |
| SHIFT 3 | Estimated value y |
You can enter any number of data items. The calculator automatically calculates the constant term, regression coefficient, and correlation coefficient for the input data pair. It stores only these numbers in its memory. It does not store the data you input.
Ex). Results from measuring the length and temperature of a steel bar.
Find the constant term (A), regression coefficient (B), correlation coefficient (r) and estimated values (x, y) using the above figures as a basis.
| OPERATION | READ-OUT | |
|---|---|---|
| "LR" | SHIFT AC 10 20,70 | 10. |
| 1003 (DATA) | 1003. | |
| 15 20,30 1005 DATA | 1005. | |
| 20 20.30 1010 DATA | 1010. | |
| 25 x | 1008. | |
| 30 xo.yo 1014 DATA | 1014. | |
| SHIFT A | 998. | |
| SHIFT B | thegol Istuten ert 0.5 | |
| (SHIFT) (r | 0.9190182776 | |
| When the temp. is 18°C) | 18 SHIFT 3 | 1007. |
| When the length is 1000 mm) | 1000 SHIFT 2 | 4. |
| N 06 82 1X |
Correcting Mistakes
If you enter an incorrect x value and catch the mistake before you press and enter correct value. If you have pressed and before you catch the error, enter the correct value, press again, and continue.
If you enter an incorrect y value and notice it before pressing I , press I and enter the correct value. If you enter an x and/or y value incorrectly and do not catch it before pressing I , simply press SI . This deletes the data pair you just entered. Re-enter both x and y correctly.
If you enter several other data pairs before realizing your mistake, enter the incorrect x value, and press 2000. Then, enter the incorrect y value, and press 2000. Now, enter the correct pair.
Logarithmic Regression
When you enter the natural logarithm of the x data instead of x itself, you can calculate logarithmic regression.
To estimate the y value based on x , enter x , press in and press shift y . To estimate the x value from y , enter y , press shift x , and then press e .
xi 29 50 74 103 118 yi 1.6 23.5 38.0 46.4 48.9 Find A, B, r, x̂ and ŷ using the above figures as a basis.
| OPERATION | READ-OUT | юпос | |
|---|---|---|---|
| v data as the estural legs | erti tu | ||
| "LR" | SHIFT at 29 In 20,20 | 3.36729583 | 11000 |
| 1.6 DATA | 1.6 | ||
| 50 In Xo, Yo 23.5 DATA | 23.5 | - | |
| 74 In 20,36 38 DATA | 38. | ||
| 103 In 20.30 46.4 DATA | 46.4 | ||
| 118In xo, 3048.9 DATA | 20 ( Dhs ) 1 48.900 | ||
| MOTTA PLAY SHIFT A | -111.1283976 | (A | |
| SHIFT B | 34.02014749 | (B | |
| SHIFT) (* | 0.9940139464 | (r) | |
| (When xi is | 80) 80 In SHIFT 🔊 | 37.94879482 | (ŷ |
| (When yi is | 73) 73 SHIFT 2 SHIFT @* | 224.1541314 | (x |
Exponential Regression
Input the y data as the natural logarithm of the actual data y to calculate exponential regression. To obtain coefficient A, press [SHFT] (A) [SHFT] (A), To estimate the y value based on x, enter x, press [SHFT] (2) then press (A). To estimate the value of x based on y, enter y, press (III), and press (SHFT) (X).
-ind A, B, r, x and y using the above figures as a basis.
Image: Strain of the
Power Regression
For power regression calculation, input the natural logarithm of both the x and y data. To obtain coefficient A, press [SHIFT] (A) SHIFT (A). To estimate the y value based on x , enter x , press (III), and press [SHIFT (2) SHIFT (A). To estimate the x value based on y , enter y , press (III), and press [SHIFT (2) SHIFT (A).
xi 28 30 33 35 38 yi 2410 3033 3895 4491 5717 Find A, B, r, $\hat{x}$ and $\frac{1}{y}$ using the above figures as a basis
| 1.61885626 | OPERATION | READ-OUT | |
|---|---|---|---|
| "LR" | SHIFT KAC 28 In Xo, Yo | 3.33220451 | ٦ |
| 2410 In DATA | 7.787382026 | 1 | |
| 30 In 10.36 3033 In DATA | 8.017307508 | 1 | |
| 33 In 10.36 3895 In DATA | 8.267448958 | ||
| 35 In 10.36 4491 In DATA | 8.409830673 | ||
| 38 In x0,30 5717 In DATA | 8.651199471 | S sewo | |
| SHIFT A SHIFT @ | 0.2388010922 | (A) | |
| SHIFT B | 2.771861638 | (B) | |
| (SHIFT) (r) | 0.9989062545 | (r) | |
| (When xi is 40) | 6587.67477 | (ŷ) | |
| (When yi is 1000) | 20.26225651 | ( x̂ ) | |
| M ZAIN SUDI COS | _ |
Gamma Function To select the COMP mode, press MODE 1 Calculation Range - 1010 < x ≤ 70.95757445 READ-OUT EXAMPLE RATION Γ(5)=24 Г (2.5) = 1.329340388 5.6例页 9.582963624
Γ (-5.6) =9.582963624×10-3
Chi Square Distribution The probability distribution function for the chi squa
f(x) = 1 , x(n/2)-1 e-x/2 Determine f ( x ) when x = 8.1 and n = 4. ਲ਼ੑੑਲ਼ੑੑੑੑੑੑਲ਼ੑੑੑੑੑੑੑੑਲ਼ੑੑੑੑੑੑੑੑੑੑੑੑੑੑੑੑੑੑ
CALCULATOR REGISTERS
This section explains why the incorrect result under "Correcting Mistakes" was reached. Your calculator has seven internal memories, called registers .
They are:
-
or X register (Display) and erent been end india del erent entre
- Y (L1) register (arithmetic operations) inclusion used are addaedd and and an and an and
- L2 through L6 registers
These are the operation registers. For normal arithmetic and function calculations, the X and Y registers are used. The value in the X register is always on the display. The Y register contains the pending portion of a calculation. This portion is not displayed. For example, when you press 4 S 6, the number 6 is displayed. (It is in the X register.) The value 4 is held as a pending value in the Y register. If you now press S, the operation is completed. The display shows 24, and the Y register contains zero. You can swap the X and Y registers by pressing
When the problem includes nested parentheses or requires the judgment of the precedence of multiplication/division and addition/subtraction, there can be more than one pending operation. In this case, the L2-L6 registers are used in addition to the X and Y registers.
When there is a pending operation of higher priority, be it multiplication over addition or parentheses over multiplication, the calculator pushes the pending operation (of lesser priority) from the Y register into the L2 register. It then pushes the contents of the L2 register into the L3 register, and so on. The calculator then performs the higher-priority calculation first, using only the X and Y registers. When this operation finishes, the calculator pops the pending operation from the L2 register back into the Y register, the L3 register into L2, and so on, and proceeds. The more nesting, the more registers are used. There are six L registers, so up to six levels of nesting are possible on your calculator.
When you mistakenly enter ■ instead of ■, because the ■ has same priority level as ➡, the calculator performs the addition first (7). Then, it waits for input of the value to be subtracted. The addition having already been done, the multiplier is applied to the result of addition (7×5=35), instead of to the value 4 (4×5+3=23).
IN SPECIFICATIONS
Do not store in hot areas. High temperatures can shorten the life of electronic devices, damage batteries, and can even distort or melt certain plastics.
Do not drop your product. This will likely result in failure to operate. Circuit boards can crack and cases may not survive the impact. Handling your product roughly will shorten its useful life.
Do not use or store in areas of high levels of dirt or dust. The electronics may be contaminated. Any moving parts will wear prematurely.
Do not use harsh chemicals, cleaning solvents or strong detergents to keep your unit looking new. You need only wipe it with a dampened cloth from time to time.
- Basic features
- Basic operarions: 4 basic calculations for +/-/x/÷/xy/x1y, and parenthesis calculations Built-in functions: Trigonometric/inverse trigonometric functions (angular units: degrees radians, grads), logarithmic/exponential functions, hyperbolic/inverse hyperbolic functions powers, roots, square roots, squares, reciprocals, cube roots, coordinate conversions decimal-sexagesimal conversions, pi, percentages, permutations, combinations, random numbers, gamma function, ENG calculations, UNIT calculations, binary/octal/decimal. hexadecimal calculations, logical operations, complex number calculations
- Statistical calculation functions: Standard deviation number of data, sums, sum of squares, mean, standard deviation
- Linear regression number of data, sum of x, sum of y, sum of squares of x, sum of squares of y, mean of x, mean of y, standard deviation of x, standard deviation of y, constant term, regression coefficient, correlation coefficient
- Memory: 1 independent memory and 6 constant memories. Delegimetrop
- Decimal point: Full floating with underflow
Read-out: Power consumption: Power source: Two lithium batteries (Type: CR2032 Cat. No. 23-162). The unit gives approximately 350 hours continuous operation on type CR2032 Auto power-off: Approximately 6 minutes after last key operation Ambient temperature range: Dimensions: 3/8"H × 27/8"W × 51/8"D (9.2H × 72W × 131mmD) Weight: 3.1 oz (88g) including batteries
dic atè arb braction key......Page 22 elmproper fraction key............24 eHexadecimal value key (/A)....................................
•All clear key
•ON key •Constant memory clear
≝ Cosine key..... Arc cosine key ..... Hexadecimal value key (⊞).....
Engineering symbol key (Peta) ......
| •Hexadecimal value key (IB) | |
|---|---|
| •Open parentheses key |
•Decunal point key
•Pandom number key |
|
•Square root key60
•Square key60 |
|
|
| •Close parentheses key | |
| ✓•Gamma function key | |
| •Right shift key | Octal key |
|
ENG (Deem open dendina)
m veri redeutiko kontansion 22 |
|
| Sexadecimal notation key | Engineering symbol key (Milli) |
| •Mumoral lev | 01 |
| ibn •Engineering symbol key (Mega) | |
| Decimal point key | •Numeral key week accertionance mercine |
| Random number key 63 |
|
| standard deviation of x) | |
|
|
| (Total sum of x) | |
| Numeral key | •Unit symbol key (Ohms) |
| •Round key 15 | (75-10) |
| •Unit symbol key (Volts) | |
| ITIEx2 | Numeral key |
|
|
| •Numeral key | standard deviation of x) |
| •Statistical calculation key |
|
| (Arithmetic mean) 67 | (Number of data) |
| ✓•Statistical calculation key | •Unit symbol key (Seconds) |
| (Square sum of x) 67 | |
| • Unit symbol key (Amperes) 37 | |
|
|
|
|
|---|---|
| Numeral key Statistical calculation key (Sample standard deviation of y ) |
•Numeral ke
•Statistical c: (Correlation |
RADIO SHACK LIMITED WARRANTY
This product is warranted against defects for 1 year from date of purchase from Radio Shack company-owned stores and authorized Radio Shack franchisees and dealers. Within this period, we will repair it without charge for parts and labor. Simply bring your Radio Shack sales slip as proof of purchase date to any Radio Shack store. Warranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage.
ACCIDENTAL GAMPAGE. EXCEPT AS PROVIDED HEREIN, RADIO SHACK MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Some states do not permit limitation or exclusion of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the purchaser.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state We Service What We Sell
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