Expression or equation
sin
cos
tan
ln
log
√
x^y
π
e
x
7
8
9
÷
(
4
5
6
×
)
1
2
3
−
=
0
.
+
⌫
C
Supports + − × ÷ ^, ( ), sqrt, sin/cos/tan, asin/acos/atan, log, ln, exp, abs, π, e. Add = to solve for x (linear & quadratic exactly; otherwise a numeric root).