This applet graphs user-defined implicit equations of the form f(x,y)=g(x,y) in a user-defined x,y ranges. The syntax used for input is the same as graphing calculator syntax.
Click the screen shot below to open the applet in a new window:
If you are interested in customizing the applet or creating your own version, you can download all the source code from: Custom AS3 Math Classes, Implicit Plotter in Flash.
In the grapher presented here, we use the standard triangle algorithm. Although the results are not always perfect (as with any other algorithm), they are essentially the same as the implicit plots obtained by the computer algebra packages like Maple.