Sharp Elw531h Owners Manual

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The four basic operators. Each is used in the same way as a standard
calculator:
+ (addition), – (subtraction), x (multiplication), and ÷ (division).
Used to specify calculations in which certain operations have precedence.
You can make addition and subtraction operations have precedence over
multiplication and division by enclosing them in parentheses. Finds the result in the same way as a standard calculator.
Basic Arithmetic
Keys, Parentheses
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125
10
Percent
12520
12515
125 5
For calculating percentages. Four methods of calculating percentages
are presented as follows.
1) $125 increased by 10%…137.5
2) $125 reduced by 20%…100
3) 15% of $125…18.75
4) When $125 equals 5% of X, X equals…2500
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OperationDisplay
Inverse, Square, Cube,  
xth Power of y,Square Root,  
Cube Root, xth Root of y
2222
416
24
Calculates the inverse of the value on the display.
Squares the value on the display.
Cubes the value on the display.
Calculates exponential values.
Calculates the square root of the value on the display.
Calculates the cube root of the value on the display.
Calculates the x
th root of y.
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1000
3
OperationDisplay
10 to the Power of x,
Common Logarithm, 
Logarithm of x to Base a
Calculates the value of 10 raised to the xth power.
Calculates the logarithm, the exponent of the power to which 10 must be
raised to equal the given value.
Calculates the logarithm of x to power a.
345
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10
5
OperationDisplay
e to the Power of x,
Natural Logarithm
Calculates powers based on the constant e (2.718281828).
Computes the value of the natural logarithm, the exponent of the power
to which e must be raised to equal the given value.
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OperationDisplay
7
Factorials
The product of a given positive integer n multiplied by all the lesser positive
integers from 1 to n-1 is indicated by n! and called the factorial of n.
c.f
n! = 1 x 2 x 3 x …xn
APPLICATIONS:
Used in statistics and mathematics. In statistics, this function is used 
in calculations involving combinations and permutations.
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OperationDisplay
64
64
Permutations, Combinations
This function finds the number of different possible orderings in selecting
r objects from a set of n objects. For example, there are six different
ways of ordering the letters ABC in groups of three letters—ABC, ACB,
BAC, BCA, CAB, and CBA.
The calculation equation is 
3P3 = 3 x 2 x 1 = 6 (ways).
This function finds the number of ways of selecting r objects from a set of
n objects. For example, from the three letters ABC, there are three ways
we can extract groups of two different letters—AB, AC, and CB.
The calculation equation is 
3C2.
APPLICATIONS:
Used in statistics (probability calculations) and in simulation hypotheses 
in fields such as medicine, pharmaceutics, and physics. Also, can be used 
to determine the chances of winning in lotteries.
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OperationDisplay
24 2835
Time Calculation
Converts a sexagesimal value displayed in degrees, minutes, seconds to 
decimal notation. Also, converts a decimal value to sexagesimal notataion 
(degrees, minutes, seconds).
Convert 24° 28’ 35” (24 degrees, 28 minutes, 35 seconds) 
to decimal notation. Then convert 24.476° to sexagesimal 
notation. Inputs values in sexagesimal notation (degrees, minutes, seconds).
Convert to decimal notation
Repeat last key operation to return to the previous display.
APPLICATIONS:
Used in calculations of angles and angular velocity in physics, and 
latitude and longitude in geography.
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OperationDisplay
57
Fractional Calculations
Inputs proper or improper fractions which consist of a numerator and 
denominator.
Inputs a mixed fraction.
1
257 Add 3      and     , and convert to decimal notation.
Convert to an improper fraction
Convert to decimal notation
APPLICATIONS:
There is a wide variety of applications for this function because 
fractions are such a basic part of mathematics. This function is useful 
for calculations involving electrical circuit resistance.
312
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25 27
73
OperationDisplay
~
~

Operation
Display Calculates $/¥ at the designated exchange rate.
$1 = ¥110
¥26,510 = $?
$2,750 = ¥?
110
26510
2750
Memory Calculations
Stores displayed values in memories A~F, X, Y, M.
Recalls values stored in A~F, X, Y, M.
Temporary memories
Independent memory Adds the displayed value to the value in the independent memory M.
Subtracts the displayed value from the value in the independent memory M.
0
(Enter 0 for M)
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