Comment #15 on issue 2132 by asmeurer: Derivative of RootSum
http://code.google.com/p/sympy/issues/detail?id=2132
I used 'auto' keyword because RootSum with auto=False isn't unevaluated
That is what I figured. This is fine then.
If it hangs on line 645, then this is performance issue. Implementation
of Frac() should help here.
OK. Well, definitely looking forward to Frac() then.
I checked, and this fix should make things work perfectly in
risch_integrate(1/(exp(5*x) + exp(x) + 1), x) once I merge in the changes
to integration3.
I will look into those test failures. Let me know if there are any other
problems you need help with for the release. I would like to have 0.7.0
out before I start classes again in a few weeks.
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