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Calculation priority sequence – Casio FX-82AU PLUS User Manual

Page 8

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E-7

*

1

Input of the closing parenthesis is required for sin, sinh, and other functions

that include parentheses.

*

2

These multiplication symbols (

s) can be omitted. A multiplication symbol

can be omitted when it occurs immediately before an opening parenthesis,
immediately before sin or other function that includes parentheses,
immediately before the Ran# (random number) function, or immediately
before a variable (A, B, C, D, M, X, Y),

P or

e

.

*

3

The closing parenthesis immediately before the

operation can be

omitted.

Input example omitting

*

2

and

*

3

operations in the above

example.

4

Q 30 30 10 3

Note: • If the calculation becomes longer than the screen width during
input, the screen will scroll automatically to the right and the

; indicator will

appear on the display. When this happens, you can scroll back to the left by
using

B and C to move the cursor. • When Linear Display is selected,

pressing

D will cause the cursor to jump to the beginning of the calculation,

while

A will jump to the end. • When Natural Display is selected, pressing

C while the cursor is at the end of the input calculation will cause it to jump
to the beginning, while pressing

B while the cursor is at the beginning will

cause it to jump to the end. • You can input up to 99 bytes for a calculation.
Each numeral, symbol, or function normally uses one byte. Some functions
require three to 13 bytes. • The cursor will change shape to

I when there are

10 bytes or less of allowed input remaining. If this happens, end calculation
input and then press

.

Calculation Priority Sequence

The priority sequence of input calculations is evaluated in accordance with the
rules below. When the priority of two expressions is the same, the calculation
is performed from left to right.

1st

Parenthetical expressions

2nd

Functions that require an argument to the right and a closing
parenthesis “)” following the argument.

3rd

Functions that come after the input value (

x

2

,

x

3

,

x

–1

,

x

!, °’ ”, °,

r

,

g

,

%), powers (

x

9), roots ()

4th

Fractions

5th

Negative sign (–)
Note: When squaring a negative value (such as –2), the value
being squared must be enclosed in parentheses (

2 7;

). Since

x

2

has a higher priority than the negative sign,

inputting

2 7 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.

6th

STAT Mode estimated values (

K, L, K

1

,

K

2

)

7th

Multiplication where the multiplication sign is omitted

8th

Permutation (nPr), combination (nCr)