#10682: sum fails with lower bound != 0 or 1 (upgrade maxima to 5.26)
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Reporter: fmaltey
| Owner: burcin
Type: defect
| Status: needs_review
Priority: critical
| Milestone: sage-5.0
Component: symbolics
| Keywords:
Work_issues: several doctests need to be patched due to changes in output
format/term order | Upstream: N/A
Reviewer:
| Author:
Merged:
| Dependencies:
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Changes (by dimpase):
* status: needs_work => needs_review
Old description:
> I test
> {{{
> sage: var ('n,k')
> sage: sum (binomial(n,k)*k^2, k, 0, n) # is right
> sage: sum (binomial(n,k)*k^2, k, 1, n) # is right n(n+1)2^(n-2)
> sage: sum (binomial(n,k)*k^2, k, 2, n) # is false : I get 0
> }}}
>
> This works correctly on Maxima 5.26 - we need to upgrade!
> The new spkg is
> [http://boxen.math.washington.edu/home/dima/packages/maxima-5.26.0.spkg
> here].
New description:
I test
{{{
sage: var ('n,k')
sage: sum (binomial(n,k)*k^2, k, 0, n) # is right
sage: sum (binomial(n,k)*k^2, k, 1, n) # is right n(n+1)2^(n-2)
sage: sum (binomial(n,k)*k^2, k, 2, n) # is false : I get 0
}}}
This works correctly on Maxima 5.26 - we need to upgrade!
The new spkg is
[http://boxen.math.washington.edu/home/dima/packages/maxima-5.26.0.spkg
here].
Install the spkg and apply the patch.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10682#comment:22>
Sage <http://www.sagemath.org>
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