Status: Valid
Owner: ----
Labels: Type-Defect Priority-Medium Evalf Integration
New issue 3504 by [email protected]: polylog.evalf doesn't work
http://code.google.com/p/sympy/issues/detail?id=3504
In [8]: integrate(ln(1 - y)/y, (y, 0, 1)).evalf()
Out[8]:
⎛ 2⋅ⅈ⋅π⎞
-polylog⎝2, ℯ ⎠
According to
http://www.wolframalpha.com/input/?i=integrate%28-log%281+-+y%29%2Fy%2C+%28y%2C+0%2C+1%29%29
it should be 1.64493.
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