Comment #2 on issue 2040 by asmeurer: Better way to make a rational function out of an expression
http://code.google.com/p/sympy/issues/detail?id=2040
So I apologize for not being clear. The expression I need to be able to work with is sqrt(t0**2 + 2*t0*t1 + t1**2). The other parts of my algorithm work just fine for converting the logs into t0 and t1 (I mostly put that example there for my own future reference). I just need some way to convert the above into a rational function in t0 and t1 (Poly numerator and denominator).
I like the idea of the powdenest() function. That might be the ticket (unless I can come up with another example where even that fails). Of course, if it too refuses to do things because of "sticky assumptions," then it will be useless.
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