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[不等式] 西西的题

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v6mm131 posted 2017-8-10 03:17 |Read mode
已知$a,b,c\ge 0$,且$a^5+b^5+c^5=3$,证明:\[3(a+b+c)^5\ge (a^5b^5+b^5c^5+c^5a^5)^6\]

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$\LaTeX$ formula tutorial

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