I think he meant to type
ev(sum(k*binomial(n,k),k,1,n),simpsum);
Martin
On Sun, 2 Nov 2003, Stavros Macrakis wrote:
> > ev(sum(binomial(n,k),k,1,n),simpsum); return nothing.
> > Maple return n*2^n/2.
>
> On my system (Maxima 5.9.0, gcl 2.5.0, Windows 2000), this correctly
> returns 2^n-1. (NOT n*2^n/2 = n*2^(n-1) .)
>
> -s
>
>
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