Does anyone know if there is a similar group to discuss issues with Maxima? 
(I think that's where my problem lies).

When I do something like:

solve(x^2/x==0,x)

I expect no solutions, but Sage gives me one solution, x==0. I'm assuming 
Sage uses Maxima here, and Maxima simplifies the fraction before solving 
(and fails to check afterwards). I can catch things like this myself, but 
I'm not sure my students would notice (especially if a hole is hidden 
inside a complicated rational function).

Thanks,
Aaron

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