Question: To Robert Israël about csum

Hi,

 

> restart;
> read "D:/Data/Data7/Advisor/csum.m";
> a :=n ->  (5/n)^(1/n);
> csum(a(n), n);

                                    false

But

> limit(a(n+1)/a(n), n = infinity);

                                      1
> 

Why?

 

Mario

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