Limit of Sequence: Convergent, Limit = 1

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Homework Statement



Determine if the following sequence in convergent or divergent, and state the limit if it converges.

((4^n)/n)^(1/n) or "The nth root of '4 to the n' over 'n'"

Homework Equations



lim ___(n)^(1/n) = 1
n->inf

The Attempt at a Solution



I had this question on a quiz earlier, but wasn't too sure about my answer. As n approaches infinity, the exponent on the very outside approaches 0. So naturally I thought that anything to the 0 is 1. However, thinking back on it, I think the inside gets larger faster than the outside exponent gets smaller. Thanks for any help, I don't want to wait until Monday!
 
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Try using the property

\left(\frac{a}{b}\right)^n = \frac{a^n}{b^n}

and then the limit you noted.
 
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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