Re: Issue 1769 in sympy: cos(oo) should return nan

2013-11-15 Thread sympy
Comment #10 on issue 1769 by gupta.ha...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 As evaluating a function at infinity is synonymous with evaluating it's limit at infinity. I guess we should write a special case to evaluate the limit when

Re: Issue 1769 in sympy: cos(oo) should return nan

2013-11-15 Thread sympy
Comment #11 on issue 1769 by gupta.ha...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 @asmeurer: sin(oo)/oo is 0 indeed. Thought sin(x) does not converge as x- oo it's value remain in the interval [-1,1] if x is real, hence limit(sin(x)/x, x,

Re: Issue 1769 in sympy: cos(oo) should return nan

2013-05-27 Thread sympy
Comment #9 on issue 1769 by asmeu...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 This comes up with a bunch of functions, actually. If evaluation at oo is not specifically defined in eval(), it is left alone. This leads to a lot of wrong

Re: Issue 1769 in sympy: cos(oo) should return nan

2013-05-27 Thread sympy
Comment #8 on issue 1769 by asmeu...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 One issue with sin(oo) is that it is not treated like nan in the core: In [74]: sin(oo)/oo Out[74]: 0 (note that limit(sin(x)/x, x, oo) is 1). This is because

Re: Issue 1769 in sympy: cos(oo) should return nan

2013-03-20 Thread sympy
Comment #7 on issue 1769 by smi...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 cos(oo) and sin(oo) are both unchanged currrently -- You received this message because this project is configured to send all issue notifications to this address. You

Re: Issue 1769 in sympy: cos(oo) should return nan

2013-02-25 Thread sympy
Updates: Cc: pevz...@gmail.com asmeu...@gmail.com Comment #5 on issue 1769 by julien.r...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 Issue 2097 has been merged into this issue. -- You received this message because this project is

Re: Issue 1769 in sympy: cos(oo) should return nan

2013-02-25 Thread sympy
Updates: Cc: nicolas@gmail.com Comment #6 on issue 1769 by julien.r...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 (No comment was entered for this change.) -- You received this message because this project is configured to send all

Re: Issue 1769 in sympy: cos(oo) should return nan

2012-09-27 Thread sympy
Updates: Status: NeedsDecision Labels: -NeedsReview Comment #4 on issue 1769 by julien.r...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 See related discussion at issue 2949. -- You received this message because you are subscribed to

Re: Issue 1769 in sympy: cos(oo) should return nan

2011-05-13 Thread sympy
Updates: Labels: NeedsReview Comment #1 on issue 1769 by sapta.ii...@gmail.com: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 https://github.com/sympy/sympy/pull/308 -- You received this message because you are subscribed to the Google Groups

Re: Issue 1769 in sympy: cos(oo) should return nan

2011-05-13 Thread sympy
Updates: Labels: sapta.iitkgp Comment #2 on issue 1769 by asmeurer: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups sympy-issues group.

Issue 1769 in sympy: cos(oo) should return nan

2009-12-16 Thread sympy
Status: Accepted Owner: asmeurer Labels: Type-Defect Priority-Medium New issue 1769 by asmeurer: cos(oo) should return nan http://code.google.com/p/sympy/issues/detail?id=1769 In [78]: sin(oo) Out[78]: sin(∞) In [79]: cos(oo)