Hello,
I would like SAGE to compute a double sum like $\sum\limits_{1\le a\le n}\sum\limits_{1\le b\le n} \max(a,b)$. The result is strange :
f(n)=sum(sum(max(a,b),b,1,n),a,1,n)
SAGE tells me that f(2) is 6. But it is rather 7 (unless i am very tired).
Thank you for your advices :-)
Pierre
In this case you may want to try max_symbolic. Try max(a,b) by itself and see what you get - maybe a?
Thank you. You are right : max(a,b) gives me a. I used max_symbolic instead, I get no error, but SAGE can't simplify the double sum.
Asked: 2012-11-26 15:41:27 +0100
Seen: 1,237 times
Last updated: Nov 26 '12
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