#11590: Integrating the sgn() function can produce incorrect results
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Reporter: mjo | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone:
Component: calculus | Keywords:
Work_issues: | Upstream: Reported upstream. Little or no
feedback.
Reviewer: | Author:
Merged: | Dependencies:
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Changes (by kcrisman):
* upstream: N/A => Reported upstream. Little or no feedback.
Comment:
This appears to be in Maxima, and is reported at
[https://sourceforge.net/tracker/?func=detail&aid=3382358&group_id=4933&atid=104933
their bug tracker].
{{{
(%i11) integrate(x*signum(x^2-1/4),x,-1,0);
1
(%o11) -
2
(%i15) integrate(x*signum(x^2-1/4),x);
! 2 1!
!x - -!
! 4!
(%o15) --------
2
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11590#comment:2>
Sage <http://www.sagemath.org>
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