2nd EDITION
CASIO
fx-991ES PLUS
NATURAL-V.P.A.M.
0
Math
D
R
G
SHIFT
ALPHA
MODE
SETUP
ON
AC
Abs
x³
log
ln
sin
sin⁻¹
cos
cos⁻¹
STO
ENG
(
)
tan
tan⁻¹
hyp
,
M+
7
8
9
DEL
√
√‾
x^
4
5
6
×
x⁻¹
10^x
1
2
3
÷
(-)
S⇔D
0
.
×10^x
=
Ans
SOLVE
=
+
-
SHIFT: Access secondary functions
ALPHA: Access variables