I glanced at a few sites hit with Google, but didn't see
anything particularly simple to do this, so I'll ask here.
I have an ellipse, of which I know its centre point (0,0)
and its major and minor axes (looks a lot like a nonuniform
scaled cylinder ^_^ )...I want to find its foci (well, only
one of 'em, but if I know one I have the other).  Is there
a quick formula for doing this with the given data, or do I
have to try to remember more than the most fundamental
aspects of my mathematical education?
-- 
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean

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