Issue 1583 in sympy: evalf doesn't evaluate arguments to functions if they have symbols

Status: Accepted Owner: smichr Labels: Type-Enhancement Priority-Medium New issue 1583 by smichr: evalf doesn't evaluate arguments to functions if they have symbols http://code.google.com/p/sympy/issues/detail?id=1583 Right now, somewhere in evalf arguments to functions that have symbols that

Issue 1584 in sympy: as_numer_denom() returns wrong result when both num and den are negative

Status: Accepted Owner: smichr Labels: Type-Defect Priority-Medium New issue 1584 by smichr: as_numer_denom() returns wrong result when both num and den are negative http://code.google.com/p/sympy/issues/detail?id=1584 As per issue 1263's fix, I think, .as_numer_denom() checks to see if the de

Issue 1540 in sympy: match returns nan instead of 0

Updates: Cc: ondrej.certik Labels: NeedsReview Comment #2 on issue 1540 by asmeurer: match returns nan instead of 0 http://code.google.com/p/sympy/issues/detail?id=1540 We fixed it (Luke, Ondrej, and I). It turns out that Add._combine_inverse was not accounting for oo - oo bei

Issue 1540 in sympy: match returns nan instead of 0

Updates: Status: Fixed Comment #3 on issue 1540 by ondrej.certik: match returns nan instead of 0 http://code.google.com/p/sympy/issues/detail?id=1540 Thanks! In [1]: from sympy import I, oo, Wild, pi In [2]: arg = I*oo In [3]: a = Wild('a', exclude=[pi]) In [4]: b = Wild('b', exclude=