Casio fx-991ES PLUS Calculator User Manual


 
E-17
To calculate
'
2
×
3
(= 3
'
2
= 4.242640687...) to three decimal
places (Fix 3)
(SETUP)(Fix) 2 C 3
3
'
2
4.243
1 2 3 4.243
1
e
ln(x) = 1
2 (X)C 1 C (
e) 1
1 2 (X)(,)
1
(,) (
e) 1
To obtain the derivative at point x = P/2 for the function y = sin(x)
*
()? (X)
C(P)C 2
0
1 ()? (X)
(,)(P) 2 
0
x
=
1
5
(x + 1) = 20
() (X) 1 C 1 C 5
20
1 () (X) 1 (,) 1
(,) 5 
20
To convert rectangular coordinates (
'
2
,
'
2
) to polar coordinates
B
(Pol) 2 C(,) 2 C
r=2,θ=45
1 (Pol) 2 (,) 2  r= 2
θ= 45
To convert polar coordinates (
'
2
, 45°) to rectangular coordinates
B
(Rec) 2 C(,) 45
X=1, Y=1
(5 + 3) ! = 40320 5 3 (x!) 40320
|2 – 7| s 2 = 10
@(Abs) 2 7 C 2
10
1 @(Abs) 2 7 2 10
To obtain three random three-digit integers
1000
(Ran#) 459
48
117
(Results shown here are for illustrative purposes only. Actual results will differ.)
88
99
1010
1111
1212
1313
1414