Bug report - tested versions 14 and 15

Question:Bug report - tested versions 14 and 15

Posted: Vaclav 0 Product: Maple 14

June 07 2011

I found following bug:

p := proc (k) sum((-1)^n*n/(factorial(k-n)*factorial(n)), n = 1 .. k) end proc;

sum(p(k), k = 1 .. 1);

sum(p(1), k = 1 .. 1);

p(1)

Results must be same, but output is 0 (bug!), -1 (correct), -1 (correct)

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