Re: Issue 1851 in sympy: Integral((-60*exp(x) - 19.2*exp(4*x))*exp(4*x), x).doit() failure

Updates: Cc: basti.kr Comment #1 on issue 1851 by asmeurer: Integral((-60*exp(x) - 19.2*exp(4*x))*exp(4*x), x).doit() failure http://code.google.com/p/sympy/issues/detail?id=1851 The problem is with substitution. Here is what is happening: In [12]: ((-60*exp(x) -

Re: Issue 1892 in sympy: integrate(1/(x*(a+b*x)**3), x) fails

Updates: Owner: asmeurer Comment #4 on issue 1892 by asmeurer: integrate(1/(x*(a+b*x)**3), x) fails http://code.google.com/p/sympy/issues/detail?id=1892 This has been fixed in polys9, and I have added a test for this in my latest WIP branch. -- You received this message because you

Re: Issue 1704 in sympy: [PATCH] Integration of certain composite functions fails

Updates: Status: Started Owner: asmeurer Labels: -NeedsBetterPatch Comment #11 on issue 1704 by asmeurer: [PATCH] Integration of certain composite functions fails http://code.google.com/p/sympy/issues/detail?id=1704 This has already been fixed, apparently by this

5 issues changed in sympy

Updates: Labels: -module-integration Integration Comment by asmeurer: (No comment was entered for this change.) Affected issues: issue 1001: Failure with definite integral of sqrt(R^2-x^2) and variations http://code.google.com/p/sympy/issues/detail?id=1001 issue 1020:

Re: Issue 1113 in sympy: rewrite sign(x) (and possibly abs()) using Piecewise

Updates: Summary: rewrite sign(x) (and possibly abs()) using Piecewise Comment #6 on issue 1113 by asmeurer: rewrite sign(x) (and possibly abs()) using Piecewise http://code.google.com/p/sympy/issues/detail?id=1113 Actually, you teach integrate how to integrate new functions by

Issue 1950 in sympy: Piecewise((x, 0 x), (0, Eq(x, 0)), (-x, x 0))._eval_interval(x, -1, 1) is wrong

Status: Accepted Owner: asmeurer CC: andy.terrel Labels: Type-Defect Priority-Medium WrongResult Integration New issue 1950 by asmeurer: Piecewise((x, 0 x), (0, Eq(x, 0)), (-x, x 0))._eval_interval(x, -1, 1) is wrong http://code.google.com/p/sympy/issues/detail?id=1950 In [30]:

Re: Issue 1127 in sympy: integrate(2*a/((((2*a)**2+x**2))**(3/2)),x) gives traceback

Comment #6 on issue 1127 by asmeurer: integrate(2*a/2*a)**2+x**2))**(3/2)),x) gives traceback http://code.google.com/p/sympy/issues/detail?id=1127 The last one is the same as issue 1851. The one in comment 4 does not fail if you use Rationals in the exponents (though it returns an

Re: Issue 1277 in sympy: Exception in trivial integral

Updates: Status: Started Comment #2 on issue 1277 by asmeurer: Exception in trivial integral http://code.google.com/p/sympy/issues/detail?id=1277 Test forthcoming in my next branch. -- You received this message because you are subscribed to the Google Groups sympy-issues group. To