Updates:
Cc: smichr
Comment #1 on issue 1525 by asmeurer: No integration by substitution
http://code.google.com/p/sympy/issues/detail?id=1525
I don't see why you think you should get
In [2]: print(integrate(f(2*x), x))
Integral(f(x), x)/2
but I agree that the traceback has to be fixed. Chris's t2 branch with his
subs seems to fix this.
In [3]: integrate(f(2*x), x)
Out[3]:
⌠
⎮ f(2⋅x) dx
⌡
Chris, what issue number is it?
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