Hi, I am doing a project for the math department and in it I would like to revolve this piecewise (3) function about the x axis. I have found programs like winplot which are pretty easy but it will only show the finished product. I am looking for something that I can either manipulate or it will revolve by itself to show the concept behind a solid of revolution. I looked at mathematica but I am not too familiar with that, does anyone know anything simple off hand? Thanks!