#15504: Possible integration error
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Reporter: ppurka | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.1
Component: calculus | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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From google spreadsheet which no one reads `X-(`
A simple integration error.
{{{
sage: integrate(log(1+x)/x,x)
log(x + 1)*log(-x) + polylog(2, x + 1)
sage: integrate(log(1+x)/x,x,0,1)
-1/6*pi^2 + I*pi*log(2) + polylog(2, 2)
}}}
Both of which are wrong according to 2.728 of Gradshteyn & Ryzhik.
Actually the second example is obviously wrong since the integration is a
real function over a real interval.
Should I report the error to Maxima? That seems to be the source.
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Ticket URL: <http://trac.sagemath.org/ticket/15504>
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