Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Updates: Status: Verified Comment #7 on issue 1419 by plaes800: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 Fixed in ce61f8d057e46b36dc2cd879891e74a7f9320201 by Mateusz including following testcase: def test_ratint_logpart():

Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Comment #6 on issue 1419 by jochen.voss: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 Mateusz's patch at http://groups.google.com/group/sympy-patches/browse_thread/thread/5be1e851b4568925 seems to fix this issue. With his patch applied I get

Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Updates: Labels: WrongResult Comment #5 on issue 1419 by ondrej.certik: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 So it is maybe a wrong result after all. -- You received this message because you are listed in the owner or CC fie

Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Comment #4 on issue 1419 by ondrej.certik: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 I think it should be 1/2 * log|x**2-9|, e.g. in absolute value. But it seems even Mathematica has it wrong: http://integrals.wolfram.com/index.jsp?exp

Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Updates: Labels: -Priority-Critical Priority-High Comment #3 on issue 1419 by ondrej.certik: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 (No comment was entered for this change.) -- You received this message because you are listed

Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Updates: Labels: -WrongResult Comment #2 on issue 1419 by ondrej.certik: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 I don't think so. In [3]: e = x/(x**2-9) In [4]: e Out[4]: -x ── 2 9 - x In [5]: integrate(e, x) Ou

Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Updates: Cc: mattpap Comment #1 on issue 1419 by plaes800: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this

Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Status: Accepted Owner: plaes800 Labels: Type-Defect Priority-Critical Integration WrongResult New issue 1419 by plaes800: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 In [60]: integrate(x/(x**2 - 9)) Out[60]: ⎛ 2⎞ log⎝9 - x ⎠ ─