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[不等式] 三元不等式

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v6mm131 posted 2017-8-8 13:46 |Read mode
已知 $a,b,c\ge0$ 且满足 $a+b+c=1$. 证明:
\[ \frac{a^{2}}{b}+\frac{b^{2}}{c}+\frac{c^{2}}{a}\ge \frac{93(a^2+b^2+c^2)-19}{12} \]

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kuing posted 2017-8-8 14:37
这个是 arqady 的坑,N年前就见过了,俺不撸……

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