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[不等式] 应该是个老题

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v6mm131 posted 2017-8-4 09:09 |Read mode
$a,b,c\ge 0$证明:\[\frac{a^2}{b}+\frac{b^2}{c}+\frac{c^2}{a}\ge \frac{4}{5}(a+b+c)+\frac{5(a-b)^2}{a+b+c}\]

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kuing posted 2017-8-4 11:58

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kuing posted 2017-8-4 12:02
应该说,就是那帖里只需证明而还没证出的不等式

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original poster v6mm131 posted 2017-8-4 12:27
回复 3# kuing


    原来的那个是2005巴尔干地区的那个

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