[不等式] 一个带 $\sin$ 的求和不等式

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APPSYZY posted 2022-10-8 11:00 |Read mode

Last edited by APPSYZY 2022-10-9 17:20证明：\[\sum_{i=1}^n\frac{1}{i}\ge\sum_{i=1}^n\frac{1}{i+\sin i},\quad\forall n\in\mathbb{N}.\]

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2025-7-23 12:35 GMT+8

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