CASIO
fx-991ES PLUS
NATURAL-U.P.A.M.
TWO WAY POWER
CASIO
◀ REPLAY ▶
SHIFT
ALPHA
MODE
ON
CALC
∫□▃
x⁻¹
log□▮
%
√◻
x²
x□
log
ln
(—)
∘‚ ,,
hyp
sin
cos
tan
RCL
ENG
(
)
S⇔D
M+
7
8
9
DEL
AC
4
5
6
×
÷
1
2
3
+
-
0
.
×10ⁿ
Ans
=