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[函数] 三个角和它们的正切都成等差数列

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hbghlyj Posted 2020-9-12 18:51 |Read mode

方程$\tan (2018 x)+\tan (2020 x)=\tan (2019 x)$在区间$[0,\pi]$上解的个数为

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kuing Posted 2020-9-12 19:05

forum.php?mod=viewthread&tid=3584 换个数字就成新题了咩……

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