CalcPlot3D, an Exploration Environment for Multivariable Calculus - Intersections of Other Types of Surfaces

Author(s): 
Paul Seeburger (Monroe Community College)

See my paper on this topic online in the Proceedings of AMATYC 2010:

http://www.amatyc.org/Events/conferences/2010Boston/proceedings.html

It includes two examples of this type of problem along with steps to follow to visually verify the solutions using CalcPlot3D.