Wednesday, August 8, 2018

real analysis - limit of a polynomial over a log exponential



I want to know the limit of



n1k(8c)lognloglogn




as n for some constants k>1, c>1.



I conjecture (based on numerical calculations) that this limit should be infinity, but I am not sure how to prove it. Can someone help me?


Answer



Hint : write everything in an exponential as
un=exp[lnn(1kln(8c)lnlnn)].
The answer should be straightforward from this point.


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