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mmc解三次方程的根能否用余弦表示

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其妙 Posted at 2015-2-10 21:28:33 |Read mode

mmc解三次方程的根，有时不是特殊数，结果是用了虚数（虽然有时候是实根），能否用余弦表示呢？

妙不可言，不明其妙，不着一字，各释其妙！

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test Posted at 2015-2-10 22:43:50

自己代公式吧……

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战巡 Posted at 2015-2-16 18:19:38

回复 1# 其妙

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kuing Posted at 2015-2-16 18:29:51

回复 3# 战巡

还能这样玩……

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Author| 其妙 Posted at 2015-2-21 16:11:19

回复 3# 战巡

，多谢战神！巡神！

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Author| 其妙 Posted at 2015-7-18 16:58:04

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妙不可言，不明其妙，不着一字，各释其妙！

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Author| 其妙 Posted at 2015-7-25 20:01:14

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妙不可言，不明其妙，不着一字，各释其妙！

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