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Discuz Math Forum»Forum › Mathematics › High School › 国庆节接力
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国庆节接力

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v6mm131

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v6mm131 posted 2015-10-1 22:24 |Read mode
求证对于任意实数$\alpha ，\beta $都存在无穷多个正整数$n$满足$sin^2n\alpha +sin^2n\beta <\frac{2π^2}{n}$
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