Status: Accepted
Owner:
Labels: Type-Defect Priority-Medium
New issue 1323 by Vinzent.Steinberg: integrate(1/sqrt(16 + 4*x**2), x) fails
http://code.google.com/p/sympy/issues/detail?id=1323
>>> integrate(1/sqrt(16 + 4*x**2), x)
Traceback (most recent call last):
File "", line 2, in
F
Comment #1 on issue 1323 by plaes800: integrate(1/sqrt(16 + 4*x**2), x)
fails
http://code.google.com/p/sympy/issues/detail?id=1323
Testcase:
Poly._decompose(sqrt(4 + x**2), x)
So, how should Poly._decompose manage it?
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Updates:
Cc: mattpap
Comment #2 on issue 1323 by ondrej.certik: integrate(1/sqrt(16 + 4*x**2),
x) fails
http://code.google.com/p/sympy/issues/detail?id=1323
I think the decompose should not get sqrt(4+x**2) in the first place, e.g.
there is
some mistake in the algorithm. Or maybe I a
Updates:
Status: Started
Comment #3 on issue 1323 by mattpap: integrate(1/sqrt(16 + 4*x**2), x) fails
http://code.google.com/p/sympy/issues/detail?id=1323
Yep, Poly._decompose() shouldn't get algebraic functions. The problem is in
putting
expressions into a normal form, especially expre
Updates:
Labels: Integration
Comment #4 on issue 1323 by Vinzent.Steinberg: integrate(1/sqrt(16 +
4*x**2), x) fails
http://code.google.com/p/sympy/issues/detail?id=1323
What has to be done to fix this "properly"?
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Updates:
Status: Fixed
Blockedon: -sympy:1393 sympy:1393
Comment #6 on issue 1323 by ronan.l...@gmail.com: integrate(1/sqrt(16 +
4*x**2), x) fails
http://code.google.com/p/sympy/issues/detail?id=1323
This has been fixed.
In [22]: integrate(1/sqrt(16 + 4*x**2), x)
Out[22]:
Updates:
Blockedon: 1393
Comment #5 on issue 1323 by asmeurer: integrate(1/sqrt(16 + 4*x**2), x)
fails
http://code.google.com/p/sympy/issues/detail?id=1323
The fix from issue 1393 would be a good fix.
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