#21057: Assumption ignored in indefinite integral computation
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Reporter: rws | Type: defect
Status: new | Priority: major
Milestone: sage-7.3 | Component: calculus
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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{{{
sage: _=var("a b c d x")
sage: forget()
sage: assume(b*(a*d-b*c)>0)
sage: 1/((a+b*x)*(c+d*x)^(1/3))
1/((b*x + a)*(d*x + c)^(1/3))
sage: _.integrate(x)
ValueError: Computation failed since Maxima requested additional
constraints;
using the 'assume' command before evaluation *may* help (example of
legal syntax is 'assume(b*(a*d-b*c)
>0)', see `assume?` for more details)
Is b*(a*d-b*c)
positive or negative?
}}}
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Ticket URL: <https://trac.sagemath.org/ticket/21057>
Sage <http://www.sagemath.org>
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