Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium Integration
New issue 1604 by asmeurer: Misapplication of integration by parts
http://code.google.com/p/sympy/issues/detail?id=1604
>>> integrate(exp(x)*g(x), x)
exp(x)*g(x) - D(g(x), x)*exp(x)
This is clearly wrong. It sho
Updates:
Blockedon: 1688
Comment #1 on issue 1604 by asmeurer: Misapplication of integration by parts
http://code.google.com/p/sympy/issues/detail?id=1604
This ends up being the source of the error:
In [2]: diff(g(x), x).subs(g(x), y)
Out[2]: 0
It isn't incorrect, but the Risch algorit
Issue 1604: Misapplication of integration by parts
http://code.google.com/p/sympy/issues/detail?id=1604
This issue is now blocking issue 1888.
See http://code.google.com/p/sympy/issues/detail?id=1888
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Comment #2 on issue 1604 by asmeurer: Misapplication of integration by parts
http://code.google.com/p/sympy/issues/detail?id=1604
Actually, it isn't that easy either, because we probably want things like
integrate(f(x).diff(x), x) or (if we ever fix issue issue 1620)
integrate(f(g(x)).diff(x
Comment #3 on issue 1604 by smi...@gmail.com: Misapplication of integration
by parts
http://code.google.com/p/sympy/issues/detail?id=1604
This appears to be fixed:
h[5] >>> integrate(exp(x)*g(x), x)
Integral(exp(x)*g(x), x)
Can't bisect at the moment to see what fixed it.
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Updates:
Labels: EasyToFix
Blockedon: -1688
Comment #4 on issue 1604 by ronan.l...@gmail.com: Misapplication of
integration by parts
http://code.google.com/p/sympy/issues/detail?id=1604
I bisected it (issue 1888 actually) to:
commit aeb80f87a16fad38ffc44b18aa52d739519e003b
Au
