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[不等式] 求证一个三角有关的不等式

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lemondian Posted at 2024-9-21 10:51:16 |Read mode
若$x>0$,证明:$\dfrac{\ sinx}{x}\geqslant -\dfrac{x}{\pi}+1$。

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2025-4-22 11:20 GMT+8

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