Sharp Elw531h Owners Manual

SSCIENTIFICCIENTIFIC
CALCULATORALCULATOR
OPERATION PERATION GUIDEUIDE
SCIENTIFIC
CALCULATOR
OPERATION GUIDE

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 1.
 
 

1
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 y   12
10 to the power of x, common logarithm, 
logarithm of x to base a
   13
e to the power of x, natural logarithm   14
Factorials   15
Permutations, combinations   16
Time calculation   17
Fractional calculations   18...

2
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...

3
(specifies normal mode)

3. 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
100008.1
Appears 
when the 
entire 
equation 
cannot...

4
5. EXPONENT DISPLAY

0.32191.6
(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...

5

6. ANGULAR UNIT
OperationDisplay
90
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...

6
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...

7
Data Entry Keys

0 to 9
Operation
2 1.4968
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 10
8 x 2 x π * The average distance between the earth and the sun being
1.496 x 10
8 km. Pressing π automatically enters the value for π...

8
Random Key

0. *** (A random number is generated.)
[Random Dice]
To simulate a die-rolling, a random integer between 1 and 6 can 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 0 and 99 can be generated randomly by pressing...

9

5.0
0.6
0.6
5.4
59
9
59
9
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, 0.5555...)
(internally, 0.6)
APPLICATIONS:...