Casio fx-991ES PLUS User Manual

Example:
Example:
Factorial Function (!)
Example: (5 + 3)! = 40320
5 3 (x!)
40320
Absolute Value Function (Abs)
Note that the input method is different depending upon whether you are
using Natural Display or Linear Display.
Example: |2 - 7| × 2 = 10
(MthIO-MathO)
(Abs) 2 7 2 10
(LineIO)
(Abs) 2 7 2 10
Random Number (Ran#)
Function that generates a pseudo random number in the range of 0.000 to
0.999.
The result is displayed as a fraction when Natural Display is selected.
Generate three 3-digit random numbers.
The random 3-digit decimal values are converted to 3-digit
integer values by multiplying by 1000.
1000 (Ran#) 634
92
175
(Results shown here are for illustrative purposes only. Actual results will
differ.)
Random Integer (RanInt#)
For input of the function of the form RanInt#(a, b), which generates a
random integer within the range of a to b.
To generate random integers in the range of 1 to 6
35

Casio fx-991ES PLUS Specifications

General

Type	Scientific
Cover	No
Form factor	Desktop
Control type	Buttons
Product color	Gray
Digits	15 digits
Display type	Dot-matrix
Display resolution	96 x 31 pixels
Display number of lines	10 lines
Storage media type	Not available
Battery life	3 year(s)
Battery type	LR44
Power source	Battery/Solar
Number of batteries supported	1
Symbolic notation	Square root
Conversion between	Decimal, Fraction, Percent
Convert angles from degrees to	Gradian, Radian
Random number/integer generator	Yes

Weight and Dimensions

Depth	162 mm
Width	80 mm
Height	11.1 mm
Weight	95 g