Is this still the case in the latest Sage? A similar such bug was
fixed not so long ago in Maxima, and we upgraded. If not, yes, file a
Sage ticket.
- kcrisman
On Jan 24, 12:16 pm, Francois Maltey <fmal...@nerim.fr> wrote:
> Hello,
>
> I test
>
> sage: var ('n,k')
> sage: sum (binomial(n,k)*k^2, k, 0, n) # seems right
> sage: sum (binomial(n,k)*k^2, k, 1, n) # seems right n(n+1)2^(n-2)
> sage: sum (binomial(n,k)*k^2, k, 2, n) # is false : I get 0
>
> Is it a maxima bug ?
> Do I push a Sage ticket for it ?
>
> F.
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