Issue 1567 in sympy: nsolve crashes

2009-07-31 Thread codesite-noreply
Status: New Owner: Labels: Type-Defect Priority-Medium New issue 1567 by anartz.lists: nsolve crashes http://code.google.com/p/sympy/issues/detail?id=1567 Hi all, A Real solution to the equation below is a float near 0.32, but nsolve flags the following error. Thanks. Regards, anartz --

Issue 1568 in sympy: factoring is working too hard

2009-07-31 Thread codesite-noreply
Status: Accepted Owner: smichr Labels: Type-Enhancement Priority-Medium Polynomial New issue 1568 by smichr: factoring is working too hard http://code.google.com/p/sympy/issues/detail?id=1568 The 3rd derivative of (1 - x)**2*(4 + x)/((2 + x)*(a + x)) wrt x is a polynomial with exponent having an

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

2009-07-31 Thread codesite-noreply
Comment #5 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 And here is yet another one. Expanding the expression makes it pass. It looks like the algorithm is making some kind of invalid assumption t

Issue 1565 in sympy: powsimp() does not combine exponents in some cases.

2009-07-31 Thread codesite-noreply
Updates: Status: Started Comment #1 on issue 1565 by asmeurer: powsimp() does not combine exponents in some cases. http://code.google.com/p/sympy/issues/detail?id=1565 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fiel

Issue 1336 in sympy: Arbitrary constant type

2009-07-31 Thread codesite-noreply
Updates: Owner: asmeurer Comment #10 on issue 1336 by asmeurer: Arbitrary constant type http://code.google.com/p/sympy/issues/detail?id=1336 By the way, we decided to put this issue on hold until we have a better core that would allow the Constant class to use a handler function within

Issue 1569 in sympy: support for divergent sums

2009-07-31 Thread codesite-noreply
Status: New Owner: Labels: Type-Defect Priority-Medium New issue 1569 by pfeld...@verizon.net: support for divergent sums http://code.google.com/p/sympy/issues/detail?id=1569 Currently, SymPy does not handle divergent sums such as the following: sum(1/n, (n, 2, oo)) When a sum diverges to