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Re: [Axiom-mail] beginner question about sum(...)
From: |
Martin Rubey |
Subject: |
Re: [Axiom-mail] beginner question about sum(...) |
Date: |
Mon, 31 Jan 2005 18:28:03 +0100 |
Dear Kostas,
Kostas Oikonomou writes:
>
> But I was disappointed by the sum(1/k^2, k=1..n) example. I saw that
> Gosper's method is implemented in sum.spad.pamphlet, but this (rather
> simple) sum needs symbolic manipulation of gamma and psi functions, which is
> not there. More generally, special functions seem to be handled only
> numerically. At least for my prospective use of Axiom, this points to a
> rather big "hole". And I wonder how many others of this sort there are.
>
> I also tried sum(1/(k*(k+a)), k=1..n). That was also returned unevaluated,
> although Gosper's method should handle it.
Why should Gosper's method handle it? As far as I can see the solution is not
hypergeometric?
Martin