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Below are the 2 most recent journal entries recorded in alex_levit's LiveJournal:

Thursday, February 14th, 2013
11:59 pm

Пешка-терминатор c7.
H#2 2 решения

РешениеCollapse )
Friday, August 27th, 1999
5:06 pm
Let a1,a2,...,an be a positive real numbers. Let A =(a1+a2+...+an)/n, G=(a1xa2x...xan)^(1/n), H=n/( (1/a1)+(1/a2)+...+(1/an) ).
It is well-known that A=>G=>H. Proof more strong un-equalities: A^(n-1)xH => G^n. There is very short proof!
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