Comment #6 on issue 1892 by mattpap: integrate(1/(x*(a+b*x)**3), x) fails http://code.google.com/p/sympy/issues/detail?id=1892
btw. These are current results from polys11 branch: In [1]: var('a,b') Out[1]: (a, b) In [2]: f = 1/(x*(a+b*x)**3) In [3]: f Out[3]: 1 ──────────── 3 x⋅(a + b⋅x) In [4]: %time integrate(_, x) CPU times: user 0.48 s, sys: 0.00 s, total: 0.48 s Wall time: 0.51 s Out[5]: ⎛ a⎞ log⎜x + ─⎟ log(x) 3⋅a + 2⋅b⋅x ⎝ b⎠ ────── + ──────────────────────────── - ────────── 3 2 2 2 3 4 3 a 2⋅a ⋅b ⋅x + 4⋅b⋅x⋅a + 2⋅a a In [6]: %time Add(*[ integrate(g, x) for g in apart(f, x).args ]) CPU times: user 0.34 s, sys: 0.00 s, total: 0.34 s Wall time: 0.35 s Out[7]: log(x) log(a + b⋅x) 1 1 ────── - ──────────── + ──────────── + ────────────── 3 3 2 2 a a a ⋅(a + b⋅x) 2⋅a⋅(a + b⋅x) -- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to sympy-iss...@googlegroups.com. To unsubscribe from this group, send email to sympy-issues+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en.