I'm trying to prove that this limit is $\infty$ , c is a constant positive integer. I've tried using L'Hopital, with no success.. (not sure if it's the right way - the derivative looks too complicated) could anyone give me a hint?
$\displaystyle \lim_{n\to \infty} \left(\frac{n^{\left(\frac{1}{\log(\log(n))}\right)}}{\log^{c}(n)}\right)$


1 Answer 1



Compute limit of the log: $$\frac{\log n}{\log\log n}-c\log\log n=\frac{\log n-c\log^2(\log n)}{\log\log n}.$$ and use equivalents.


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