distributive properties of sums.

Question:distributive properties of sums.

Posted: chrtzstn 55

February 16 2015

How can I make transformations like:

sum(a*u[k]+b*v[k],k=1..n) into a*sum(u[k],k=1..n)+b*sum(v[k],k=1..n)

and in the opposite direction?

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