4100| 17
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[函数] 证明:$x+\sin x\geqslant 2\ln(1+x)$ |
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妙不可言,不明其妙,不着一字,各释其妙!
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妙不可言,不明其妙,不着一字,各释其妙!
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2025-7-15 15:14 GMT+8
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