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[函数] 无理数

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guanmo1 Posted at 2015-11-18 18:30:05 |Read mode

Last edited by hbghlyj at 2025-3-21 05:52:55求证：$\cos \frac{\pi}{7}$ 是无理数

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色k Posted at 2015-11-18 20:27:52

kuing.cjhb.site/forum.php?mod=redirect&go … d=3352&pid=13601

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Author| guanmo1 Posted at 2015-11-18 21:37:14

回复 2# 色k

现在只需解决这道题，链接中好像还是没解决。

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色k Posted at 2015-11-18 21:58:18

链接中已经解决了更一般的情况

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kuing Posted at 2015-11-19 18:54:55

回复 3# guanmo1

睁大*眼看清链接中4楼的截图。

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