CASIO
fx-991EX
CLASSWIZ
S
A
M
STO
RCL
STAT
CMPLX
MAT
VCT
D
R
G
0
SHIFT
ALPHA
▲
◄
►
▼
SETUP
ON
CALC
∫dx
x
x
⁻¹
log_■
■/□
√
x
²
x
■
log
(-)
°' "
x
⁻¹
sin
cos
tan
STO
ENG
(
)
S⇔D
M+
7
8
9
DEL
AC
4
5
6
×
÷
1
2
3
+
-
0
.
×10ˣ
Ans
=