nusum in commercial macsyma gives
((cos((b/2)))/(2 * sin((b/2)))) - ((cos(b * (k + (1/2))))/(2 * sin((b/2))))
RJF
> -----Original Message-----
> From: maxima-admin at math.utexas.edu
> [mailto:maxima-admin at math.utexas.edu] On Behalf Of bantone at web.de
> Sent: Sunday, July 30, 2006 10:37 AM
> To: maxima at math.utexas.edu
> Subject: GosperSum division by zero
>
>
> Hi,
>
> I tried to find a closed form for this simple summation:
>
> GosperSum(sin(b*n), n, 0, N);
>
> I get this error message:
>
> Division by 0
> #0: intLinPolyNorm(expr=sin(b*(n+1)),k=n)(norm.mac line 26)
> #1: intLinNorm(expr=sin(b*(n+1)),k=n)(norm.mac line 45)
> #2: intLinNormList(exprlist=[sin(b*(n+1))],k=n)(norm.mac line 135)
> -- an error. Quitting. To debug this try debugmode(true);
>
> Is there a way to work around this?
>
> gr.
> Anton
>
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