INEQUALITY'S BLOG

August 1, 2010

Problem 037

Filed under: Uncategorized — KKKVVV @ 6:36 am

Let f:R\longrightarrow R_{0}^{+} and f''>0. For all a\geq b\geq c>0; a, b, c\in I, Prove that:

ab^2f(a)+bc^2f(b)+ca^2f(c)\geq abc(f(a)+f(b)+f(c))

 

Van khea     

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