Updates:
        Status: Accepted
        Labels: Integration

Comment #4 on issue 2081 by asmeurer: Pow substitution introduces wrong answers
http://code.google.com/p/sympy/issues/detail?id=2081

So I made the change you suggested (except I didn't consider the positive assumption yet) and ran the tests. Surprisingly, the code that I thought was going to fail, i.e., the series/limit code, didn't have any failures. The code that did have failures is the integration code.

This is somewhat ironic actually, because this is exactly the kind of fix that is really needed in that code, by my previous assessment (see issue 790 and some of the blocking ones).

So I think that if we can figure out why these aren't working after this fix, then we can actually make this fix that you suggest.

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