Does the Series 1.05^n/n^5 Converge or Diverge?

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Homework Statement



Summation from 1 to infinity of 1.05^n/n^5

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The Attempt at a Solution


Lost. I'm not sure if the ratio test would apply here.. convergence tests are definitely not my strong point!
 
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Does the limit of \frac{1,05^n}{n^5} approach 0? What can you conclude from this?
 
No, it would approach infinity, right? Meaning that it diverges?
 
Yes, so you can conclude that the series diverges.
 
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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