Yes, it is!
However, it's not easy to explain how you can do this...
You'll find an example here: http://cjoint.com/?gxmh4ExS5i
Just type a function in C3 (for example, sin(x) or 1/x or FISHER(x) or
0.5*x^2+2.2*x+1 or...)
And come back if you have any questions/comments on it!