Sunday, 21 April 2019

sequences and series - Compute limnto+inftynfrac12left(1+frac1nright)left(11cdot22cdot33cdotsnnright)frac1n2


How to compute
limn+n12(1+1n)(112233nn)1n2
I'm interested in more ways of computing limit for this expression





My proof:



Let unbe that sequence we've:



lnun=n+12nlnn+1n2nk=1klnk=n+12nlnn+1n2nk=1klnkn+1n2nk=1klnn=1n2nk=1klnkn=1nnk=1knlnkn10xlnxdx=1/4



Therefore the limit is e14

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