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original poster: 其妙

[函数] 六道多项式与根的题目,来做做

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abababa posted 2017-10-1 18:25
回复 20# 其妙

用网友的方法算出来是$-x^{15}+10x^{12}+9x^{10}-40x^9+540x^7+80x^6-27x^5+1620x^4-80x^3+540x^2+360x+59$,和直接用软件算的结果就差一个负号,是一样的。

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hejoseph posted 2017-10-1 18:29
回复 21# abababa

我是直接用结式消元的,第六题那个连接里我提到过
forum.php?mod=redirect&goto=findpost& … d=4866&pid=22846

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abababa posted 2017-10-1 18:41
回复 22# hejoseph

是的,我知道那贴,但我现在都还看不懂,包括网友这个。再多和大家学学可能会好点。

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