Convergence or Divergence of a series

CourtneyS
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Homework Statement


Does sum from n=1 to n=infinity of 1/[n^(1+1/n)]
converge or diverge.

Homework Equations



^^^^^^^^^^^^^^^

The Attempt at a Solution


The general term goes to 0 and its a p-series with p>1, but for large n the series becomes 1/n pretty much so, even tho p>1 is it divergent?
 
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CourtneyS said:

Homework Statement


Does sum from n=1 to n=infinity of 1/[n^(1+1/n)]
converge or diverge.

Homework Equations



^^^^^^^^^^^^^^^

The Attempt at a Solution


The general term goes to 0 and its a p-series with p>1, but for large n the series becomes 1/n pretty much so, even tho p>1 is it divergent?
It isn't a ##p## series but, as you say, it's "like" a ##p## series with ##p=1## as ##n## gets large. So if I were you, I would try a limit comparison test with ##\sum\frac 1 n## and see.
 
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There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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