Updates:
Labels: Integration
Comment #2 on issue 791 by asmeurer: trigintegrate: implement more
heuristics
http://code.google.com/p/sympy/issues/detail?id=791
I'll see what things look like, but we may need to do this even with the
full algorithm because in order to integrate sin and cos, the Risch
algorithm has to first rewrite them in terms of tan (either the tan(x/2)
identities or exp(-log(tan(x)**2 + 1)/2)). This is fine, but the problem
is rewriting back into terms of sin and cos again after integrating. It
might not be so bad, but if it is, we want heuristics to try it first.
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