On Oct 3, 2005, at 12:45 PM, Russ and Lisa wrote:

> Has anyone tried to graph the classic surface of Revolution problems
> from Calculus using
> GC? It seems like one should be able to see the region in the x-y
> plane, and animate the
> revolution to see the solid of revolution.
>
> I can see the region by graphing:
>
> x=(0 if y<((f(x) if y > g(x)) if a<x<b)
>
> But I can't seem to get the revolution working. Any help would be
> appreciated.
>
> Russ

Here's an example with a rotating meridian:

(Also posted in the Files section at Files > Calculus, Analysis >
Surfaces of revolution.