- It does simple algebra like:  3^5+2sin(2pi-1)*e/10.5
- It has all the trig functions: sin, cos, etc..
- You can define custom variables, like:  a = 5
- You can define custom functions too.  f(x, y) = 3x+5y
- You can graph stuff, of course:  y = 8log(x)
- You can graph inverses too:  x = 4y
- Zoom in/out:  zin and zout
- Derivative of functions:  der sin(x), x, 1 // function, variable of differentiation, point
- Integrals too:  int 3x^4, x, 0, 4 // function, variable of integration, lower limit, upper limit
- See the reference for everything else.