Re: [Maxima-discuss] simplify_sum leads to a wrong value

[Raymond T. <toy...@gm...>]

On 5/16/23 11:36, andre maute wrote:
> FYI. simplify_sum gives for me a sum of 6 gamma_incomplete_lower terms
>
> with the help of
> https://mathworld.wolfram.com/IncompleteGammaFunction.html
> shouldn't e.g. gamma_incomplete_lower(4,-1) be computable exactly?

It should be able to.

Ah. you need to set gamma_expand to true.  Then the final result is 
3^(3/2)*(1+%e)/8.  I think this is the correct value.  (Which is still 
the incorrect value for the original sum question.)