CASIO
fx-39
SCIENTIFIC CALCULATOR
888888888
42
INV
1/x
x!
√
x²
log
10
x
ln
e
x
x
y
x
1/y
+/-
º ' "
hyp
sin
-1
cos
-1
tan
-1
a
b/c
∑x²
X↔Y·
M
∑x
[(···
6
n
···)]
X̅
M in
σ
n
MR
σ
n
-1
7
8
9
C
AC
SAC
4
5
6
×
÷
1
2
3
+
—
0
·
EXP
π
=
M+
x
DEL
DEG—
RAD—
GRA—
S D —