How to combine sums ?

• Subject: How to combine sums ?
• From: reyssat
• Date: Wed, 13 Feb 2008 13:35:18 +0100

Does maxima know a way of combining sums which differ only by their 
bounds using additivity on bounds ?

For instance, I don't know how to simplify (for n>0)
s:sum(log(i),i,1,n+1)-sum(log(i),i,1,n);
into
log(n+1)


or simplify
s2:sum(log(i),i,1,n)+sum(log(i),i,n+1,2*n);
into
sum(log(i),i,1,2*n)

Thanks for any help


Eric Reyssat

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