Determine Limit of Sequence (n^n)/(n!) - Math Homework Help

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SUMMARY

The limit of the sequence (n^n)/(n!) is determined to be infinity as n approaches infinity. This conclusion is based on the observation that n^n grows significantly faster than n!. To support this claim, one can express the sequence as a product of fractions and analyze its behavior. A suggested approach is to demonstrate that (n+1)(n+1)/(n+1)! is greater than n^n/n! for n > 1, which provides a foundational step towards a formal proof.

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Homework Statement


Determine the limit of the sequence (n^n)/(n!)


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The Attempt at a Solution



I think the limit should be infinity as n^n grows faster than n!, but I'm not sure how to prove it. Thanks for the help!
 
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Write it as

[tex]\frac n n\cdot \frac{n}{n-1}\cdot\frac{n}{n-2}\cdots\frac n 2\cdot\frac n 1[/tex]

and see if you can underestimate it with something going to infinity.
 
Can you show that (n+1)(n+1)/(n+1)! > nn/n! for n>1 ?

This won't compete the proof, but it's a start.
 

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