add 输入表达式
1
2
3
input
x
y
t
,
7
8
9
÷
←
(
)
<
>
4
5
6
×
→
abs
exp
sqrt
cbrt
1
2
3
-
del
sgn
^
log
ln
0
.
=
+
enter
sin
cos
tan
cot
sec
csc
round
sum
←
asin
acos
atan
acot
asec
acsc
floor
prod
→
sinh
cosh
tanh
coth
sech
csch
ceil
int
del
asinh
acosh
atanh
acoth
asech
acsch
gamma
shift
enter
q
w
e
r
t
y
u
i
o
p
a
s
d
f
g
h
j
k
l
θ
shift
z
x
c
v
b
n
m
←
→
+
-
×
÷
^
log
ln
exp
del
enter
FPS: --