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[不等式] 系数繁杂的不等式

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大佬最帅 posted 2022-3-27 17:19 |Read mode
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如何证明此不等式

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kuing posted 2022-3-27 17:30
左边怎么没有 e 为分母的项?现在左边关于 e 递增,只需证 e=0,于是这个 e 相当于多余(当然硬说这 e 是自然对数的底那就无话可说……
右边也略为奇怪,它并不是关于 p,q,r,s 的对称式,展开后为 2(pq+pr+ps+qr+2qs),没有 rs 项,多了个 qs 项……
综上,这题不敢撸。

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original poster 大佬最帅 posted 2022-3-27 17:55
回复 2# kuing
想不到还有kuing不敢撸的题

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