In this applet the user enters parametric equations for a planar curve in rectangular or in polar coordinates. The curve is plotted with x and y ranges adjusted automatically. The curve can be traced showing the motion that is defined by a particular parametric representation.
Click the screen shot below to open the applet in a new window:
Note: The complete source code for both applets is available in the article "Flash Tools for Developers: Parametric Curves on the Plane" that you can find at Custom Classes for Mathematics section of Flash and Math.