#15504: Possible integration error
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Reporter: ppurka | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.4
Component: calculus | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by rws):
For completeness, sympy has
{{{
In [1]: integrate(log(1+x)/x)
Out[1]:
⎛ ⅈ⋅π⎞
-polylog⎝2, x⋅ℯ ⎠
In [2]: integrate(log(1+x)/x,(x,0,1))
Out[2]:
⎛ ⅈ⋅π⎞
-polylog⎝2, ℯ ⎠
}}}
while Wolfram says `integral (log(1+x))/x dx = -Li_2(-x)+constant`.
The sympy solution will also only be available with sympy-0.7.8 because of
a missing `polylog._sage_` method in earlier versions.
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Ticket URL: <http://trac.sagemath.org/ticket/15504#comment:6>
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