On Jul 6, 6:16 am, Burcin Erocal <bur...@erocal.org> wrote:
> I'm reluctant to expose this functionality by default in Sage, since
> Maxima returns wrong results for certain input:
>
> http://trac.sagemath.org/sage_trac/ticket/3587#comment:9
Looks like the problems mentioned there have been fixed in CVS.
(%i5) simplify_sum ('sum (binomial (n, k), k, 0, n));
(%o5) 2^n
(%i6) simplify_sum ('sum (binomial (n, k), k, 1, n));
(%o6) 2^n-1
(%i7) simplify_sum ('sum (binomial (n, k), k, 2, n));
(%o7) 2^n-n-1
(%i8) simplify_sum ('sum (binomial (n, k), k, 2, n - 2));
(%o8) 2^n-2*n-2
Or is that wishful thinking on my part?
FYI the Maxima 5.19 branch is scheduled for Aug 1
with an official release later in the month.
Robert Dodier
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