Inputting Expressions And Values - Casio fx-991ZA Plus User Manual

c7APO 110 Min. ; 260 Min.
minutes or 60 minutes for Auto Power Off.
c8]CONT'
Contrast" for details.
Initializing Calculator Settings
Perform the following procedure to initialize the calculator, which returns the
calculation mode to COMP and returns all other settings, including setup
menu settings, to their initial defaults.
19(CLR)1(Setup)=(Yes)

Inputting Expressions and Values

Basic Input Rules
Calculations can be input in the same form as they are written. When you
press = the priority sequence of the input calculation will be evaluated
automatically and the result will appear on the display.
4 × sin30 × (30 + 10 × 3) = 120
4 *s 30 )*( 30 + 10 * 3 )=
1
* Input of the closing parenthesis is required for sin, sinh, and other functions
that include parentheses.
2
* These multiplication symbols (×) 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, E, F, M, X, Y), scientific constants, π or
The closing parenthesis immediately before the = operation can be
3
*
omitted.
Input example omitting **
example.
Important: If you execute a calculation that includes both division and
multiplication operations in which a multiplication sign has been omitted,
parentheses will be inserted automatically as shown in the examples
below.
• When a multiplication sign is omitted immediately before an open
parenthesis or after a closed parenthesis.
6 ÷ 2 (1 + 2) p 6 ÷ (2 (1 + 2))
1 ÷ (2 + 3) sin(30) p 1 ÷ ((2 + 3) sin(30))
• When a multiplication sign is omitted immediately before a variable, a
constant, etc.
6 ÷ 2π p 6 ÷ (2π)
Adjusts display contrast. See "Adjusting Display
1
*
2
*
4 s 30 )( 30 + 10 * 3 =
You can specify a trigger time of 10
*
and )*
2 3
6 ÷ A (1 + 2) p 6 ÷ (A (1 + 2))
2 ÷ 2' 2 p 2 ÷ (2' 2)
EN-7
3
operations in the above
4π ÷ 2π p 4π ÷ (2π)
Math Math
e
.
Math Math