Sharp Scientific calculator User manual

S
S
CIENTIFIC
CIENTIFIC
CALCULATOR
ALCULATOR
OPERATION
PERATION
GUIDE
UIDE
SCIENTIFIC
CALCULATOR
OPERATION GUIDE
<WriteView>
GuideBookEL-W53107.2.52:48PMページ35

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 y12
10 to the power of x, common logarithm,
logarithm of xto base a
13
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
~
~
GuideBookEL-W53107.2.52:48PMページ1

2
How to Operate
Mode key
<Example>
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
<Power on>
<Power off>
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
GuideBookEL-W53107.2.52:48PMページ2

3
(specifies normal mode)
<Example>
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
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
2. 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.
GuideBookEL-W53107.2.52:48PMページ3

4
5. EXPONENT DISPLAY
<Example>
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).
GuideBookEL-W53107.2.52:48PMページ4

5
<Example>
6. ANGULAR UNIT
Operation Display
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 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
2
90˚ (DEG) =
π/2 (RAD) =
100 (GRAD) =
Check to confirm 90 degrees equalling π/2 radians
equalling 100 grads. (π=3.14159...)
GuideBookEL-W53107.2.52:48PMページ5

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 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
GuideBookEL-W53107.2.52:48PMページ6

7
Data Entry Keys
<Example>
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.
GuideBookEL-W53107.2.52:48PMページ7

8
Random Key
<Example>
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.
GuideBookEL-W53107.2.52:48PMページ8

9
<Example>
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:
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.)
GuideBookEL-W53107.2.52:48PMページ9