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
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,
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
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
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
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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.
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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
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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.
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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
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Comment #2 on issue 1769 by asmeurer: cos(oo) should return nan
http://code.google.com/p/sympy/issues/detail?id=1769
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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)
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