Casio fx-82EX User Manual page 9

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8
Permutation (nPr), combination (nCr)
9
Multiplication (×), division (÷)
10 Addition (+), subtraction (−)
Note: When squaring a negative value (such as -2), the value being
squared must be enclosed in parentheses (2). Since x
a higher priority than the negative sign, inputting 2 would result in
the squaring of 2 and then appending a negative sign to the result. Always
keep the priority sequence in mind, and enclose negative values in
parentheses when required.
Inputting an Expression Using Natural Textbook
Format (MathI/MathO or MathI/DecimalO Only)
Formulas and expressions that include fractions and/or special functions
such as √ can be input in natural textbook format by using templates that
appear when certain keys are pressed.
1
Example: 3
+ 5
2
1. Press ().
• This inputs a mixed fraction template.
2. Input values into the integer, numerator, and denominator areas of the
template.
3. Do the same to input the remainder of the expression.
() 532
Tip: While the input cursor is located within the input area of a template
(mixed fractions), pressing  jumps to the position immediately
following (to the right) of the template, while pressing  jumps to the
position immediate before (to the left of) it.
Note
• When you press  and obtain a calculation result, part of the
expression you input may be cut off. If you need to view the entire input
expression again, press  and then use  and  to scroll the input
expression.
• Nesting of functions and parentheses is allowed. Further input will
become impossible if you nest too many functions and/or parentheses.
To undo operations (MathI/MathO or MathI/DecimalO only): To undo the
last key operation, press (UNDO). To redo a key operation you have
just undone, press (UNDO) again.
Using Values and Expressions as Arguments (MathI/
MathO or MathI/DecimalO only)
Example: To input 1 +
3
2
7
and then change it to 1 +
6
312
8
7
6
2
has

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Fx-85exFx-350ex