Inegalitate concurs Yugoslavia

Mathematics2000
Mesaje: 9
Membru din: Dum Feb 14, 2016 4:27 pm

Inegalitate concurs Yugoslavia

Mesaj de Mathematics2000 »

Demonstrati ca:

({log_a}^b)/(a+b)+({log_b}^c)/(b+c)+({log_c}^a)/(c+a)>=9/(2(a+b+c)), a,b,c reale >1
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