INEQUALITY'S BLOG

July 11, 2011

Problem 230 (van khea)

Filed under: Problem by Van Khea — KKKVVV @ 11:52 pm

Let a, b, c>0\& a^2+b^2+c^2=1. Prove that: \displaystyle \frac{1}{a^2-b^2c^2}+\frac{1}{b^2-c^2a^2}+\frac{1}{c^2-a^2b^2}\leq \frac{27}{4}

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