30-Oct-2007
Experimental permalink feature, added u(x) [Heaviside step function] notation. Also, 3-D plots have been moved to a separate page.

27-Jun-2007
acot() and atan() bugfix.

15-Apr-2007
Ability to set colors.

27-Feb-2007
Parametric plotting (experimental).

11-Feb-2007
Polar plotting and slightly more robust equation checking. Send comments/suggestions/bugs, please.

17-Jan-2007
Experimental saving feature (to .svg, .eps, and .png). Needs work to define the bounding boxes.

16-Jan-2007
Some improvements to the root-finding algorithm. New intersection feature (experimental).

10-Jan-2007
Experimental root finding using Newton's method. Let me know if you have suggestions on improving it - in particular, how to accomplish higher x precision for double roots, and how to deal with things like tan(x)-x and sqrt(x).

08-Jan-2007
You can now type in upto 5 functions separated by commas in the address bar:
http://fooplot.com/sin(x),cos(x),tan(x),x,x^2