Sharp WriteView EL-W531 Manual de usuario

CIENTIFIC

CALCULATOR

ALCULATOR

OPERATION

PERATION

GUIDE

UIDE

SCIENTIFIC

CALCULATOR

OPERATION GUIDE

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CONTENTS

HOW TO OPERATE

Read Before Using

Functions and Key Operations

ON/OFF, entry correction keys 6

Data entry keys 7

Random key 8

Modify key 9

Basic arithmetic keys, parentheses 10

Percent 11

Inverse, square, cube, xth power of y,

square root, cube root, xth root of y12

10 to the power of x, common logarithm,

logarithm of xto base a

e to the power of x, natural logarithm 14

Factorials 15

Permutations, combinations 16

Time calculation 17

Fractional calculations 18

Memory calculations 19

Last answer memory 20

User-defined functions 21

Absolute value 22

Trigonometric functions 23

Arc trigonometric functions 24

Hyperbolic functions 25

Coordinate conversion 26

Binary, pental, octal, decimal, and

hexadecimal operations (N-base) 27

Key layout 2

Reset switch/Display pattern 3

Display format and decimal setting function 3-4

Exponent display 4

Angular unit 5

STATISTICS FUNCTIONS

Data input and correction 28

“ANS” keys for 1-variable statistics 29

Data correction 30-32

“ANS” keys for 2-variable statistics 33

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How to Operate

Mode key

1. KEY LAYOUT

≈Read Before Using≈

This operation guide has been written based on the EL-W531, EL-W531G, and

EL-W531H models. Some functions described here are not featured on other models.

In addition, key operations and symbols on the display may differ according to the model.

(SD): Single variable statistic calculation

(LINE): Linear regression calculation

(QUAD): Quadratic regression calculation

(E_EXP):

Eular Exponential regression calculation

(LOG): Logarithmic regression calculation

(POWER):

Power regression calculation

(INV): Inverse regression calculation

(EXP): Exponential regression calculation

2nd function, ALPHA keys

Pressing these keys will enable the

functions written in orange (2nd F)

or green (ALPHA) above the

calculator buttons.

This calculator can operate in three different

modes as follows.

[Normal mode] •Mode = 0; normal mode

for performing normal

arithmetic and function

calculations.

ON/C, OFF key

Direct function

2nd functionWritten in orange

above the ON/C key

[STAT mode]

•Mode = 1; mode for

performing 1- or 2-variable

statistical calculations. To

select the statistical sub-

mode, press the

corresponding number key

after .

[Drill mode] •Mode = 2; mode for

performing drill

calculations. To select the

drill sub-mode, press the

corresponding number

key after .

(MATH): Math drill

(TABLE): Multiplication table drill

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(specifies normal mode)

DISPLAY PATTERN

Initial display

The actual display does not appear like this.

This illustration is for explanatory purposes only.

Note: The calculator has two settings for displaying a

floating point number: NORM1(default setting) and

NORM2. In each display setting, a number is

automatically displayed in scientific notation outside a

preset range:

•NORM1: 0.000000001 ≤x ≤9999999999

•NORM2: 0.01 ≤x ≤9999999999

10000 8.1

Appears

when the

entire

equation

cannot be

displayed.

Hyperbolic

symbol (HYP) Alphabet

symbol

(ALPHA)

Angular unit

indicator

(DEG/RAD/GRAD)

2ndF symbol Appears when the

entire equation

cannot be displayed.

Display format indicator

(ENG, SCI, FIX, N2, N1)

WriteView mode

(View as it is written)

Equation display

Answer display

Memory

symbol

For convenient and easy operation, this model can be used in one of five display modes.

The selected display status is shown in the lower left part of the display (Format

Indicator).

Note: If more 0’s (zeros) than needed are displayed when the ON/C key is pressed, check

•Floating decimal point format 1/2 (N1/N2 is displayed)

Valid values beyond the maximum range are displayed in the form of [10-digit

(mantissa) + 2-digit (exponent)]

•Fixed decimal point format (FIX is displayed)

Displays the fractional part of the calculation result according to the specified

number of decimal places.

•Scientific notation (SCI is displayed)

Frequently used in science to handle extremely small or large numbers.

•Engineering scientific notation (ENG is displayed)

Convenient for converting between different units.

RESET

RESET SWITCH

Reset switch

RESET

If the calculator fails to operate

normally, press the reset switch on

the back to reinitialise the unit. The

display format and calculation mode

will return to their initial settings.

NOTE:

Pressing the reset switch

will erase any data stored

in memory.

4. DISPLAY FORMAT AND

DECIMAL SETTING FUNCTION

Let’s compare the display result of

[10000 ÷ 8.1 =] in each display format.

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5. EXPONENT DISPLAY

0.32 191.6

(FIX mode TAB = 3)

(SCI mode)

(ENG mode)

(normal mode)

The distance from the earth to the sun is approx. 150,000,000 (1.5 x 108) km. Values

such as this with many zeros are often used in scientific calculations, but entering the

zeros one by one is a great deal of work and it’s easy to make mistakes. In such

cases, the numerical values are divided into mantissa and exponent portions,

displayed and calculated.

What is the number of electrons flowing in a conductor when

the electrical charge across a given cross-section is 0.32 cou-

lombs. (The charge on a single electron = 1.6 x 10-19coulombs).

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6. ANGULAR UNIT

Operation Display

Angular values are converted from DEG to RAD to GRAD with each push of the DRG

key. This function is used when doing calculations related to trigonometric functions or

coordinate geometry conversions.

Degrees (DEG is shown at the top of the display)

A commonly used unit of measure for angles. The angular measure of a circle

is expressed as 360°.

Radians (RAD is shown at the top of the display)

Radians are different from degrees and express angles based on the circumfer-

ence of a circle. 180°is equivalent to πradians. Therefore, the angular mea-

sure of a circle is 2πradians.

Grads (GRAD is shown at the top of the display)

Grads are a unit of angular measure used in Europe, particularly in France. An

angle of 90 degrees is equivalent to 100 grads.

The relationships between the three types

of angular units can be expressed as right: π

90˚ (DEG) =

π/2 (RAD) =

100 (GRAD) =

Check to confirm 90 degrees equalling π/2 radians

equalling 100 grads. (π=3.14159...)

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Turns the calculator on or clears the data. It also clears the contents of the

calculator display and voids any calculator command; however, coefficients in

3-variable linear equations and statistics, as well as values stored in the

independent memory in normal mode, are not erased.

Clears all internal values, including the last answer (ANS) and statistics. Values

stored in memory in normal mode are not erased.

These arrow keys are useful for Multi-Line playback, which lets you

scroll through calculation steps one by one.

Turns the calculator off.

These keys are useful for editing equations. The key moves the

cursor to the left, and the key moves the cursor to the right.

The key deletes the symbol/number at the left of the cursor, and

the key deletes the symbol/number at the cursor.

≈Functions and Key Operations≈

ON/OFF, Entry

Correction Keys

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Data Entry Keys

0 to 9

Operation

21.496 8

Display

Decimal point key. Enters a decimal point.

Numeric keys for entering data values.

Pressing this key switches to scientific notation data entry.

Provided the earth is moving around the sun in a circular orbit,

how many kilometers will it travel in a year?

Circumference equals diameter x π; therefore,

1.496 x 108x 2 x π

* The average distance between the earth and the sun being

1.496 x 108km.

Pressing πautomatically enters the value for π(3.14159...).

The constant π, used frequently in function calculations, is the ratio of the

circumference of a circle to its diameter.

Enters the minus symbol.

The subtraction key is not used for entering negative numbers.

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Random Key

0.*** (A random number is generated.)

[Random Dice]

To simulate a die-rolling, a random integer between 1and 6can be generated by

pressing . To generate the next random dice number, press .

[Random Coin]

To simulate a coin flip, 0(heads) or 1(tails) can be randomly generated by pressing

. To generate the next random coin number, press .

[Random Integer]

An integer between 0and 99 can be generated randomly by pressing .

To generate the next random integer, press .

Generates random numbers.

Random numbers are three-decimal-place values between 0.000 and 0.999. Using this

function enables the user to obtain unbiased sampling data derived from random

values generated by the calculator. (Using line mode is preferable since in W-View

mode, the numbers are generated by fractions.)

APPLICATIONS:

Building sample sets for statistics or research.

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5.0

0.6

5.4

Modify Key

Function to round calculation results.

Even after setting the number of decimal places on the display, the calculator per-

forms calculations using a larger number of decimal places than that which appears

on the display. By using this function, internal calculations will be performed using

only the displayed value.

FIX mode TAB = 1 (normal calculation)

Rounded calculation (MDF)

(internally, 0.5555...)

(internally, 0.6)

APPLICATIONS:

Frequently used in scientific and technical fields, as well as business,

when performing chained calculations.

(In W-View mode, press to show the answer in decimal.)

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