How to substract two Sums

Question:How to substract two Sums

Posted: alabax 10 Product: Maple

December 06 2010

Hi!

I've got two Sums vith variable arbitrary boundaries:

a:=Sum(x(i),i=n..m);
b:=Sum(x(i),i=n-1..m+1);

I would like to substract theese sums and I want Maple to simplify the result to

x(n-1)+x(m+1)

Is that possible?

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