#10923: Bad sign in integral()
------------------------------+---------------------------------------------
Reporter: tmonteil | Owner: burcin
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.8
Component: calculus | Keywords: integral sd35.5
Work_issues: | Upstream: Fixed upstream, in a later
stable release.
Reviewer: Benjamin Jones | Author: Thierry Monteil, Michael
Orlitzky
Merged: | Dependencies: #12094
------------------------------+---------------------------------------------
Description changed by benjaminfjones:
Old description:
> Here is the problem (tested on 4.6.2) :
>
> {{{
> sage: i = integral(e^(-1/x^2),x,0,1)
> sage: i.numerical_approx()
> -0.0890738558907803
> }}}
>
> This should be a positive number since the map is positive.
New description:
Here is the problem (tested on 4.6.2) :
{{{
sage: i = integral(e^(-1/x^2),x,0,1)
sage: i.numerical_approx()
-0.0890738558907803
}}}
This should be a positive number since the map is positive.
-----
Apply:
1. [attachment:sage-trac_10923.patch] to Sage library
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10923#comment:17>
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