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[函数] 求教

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nttz posted 2024-7-28 22:36 |Read mode
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最后一个结论怎么直接法

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12673zf posted 2024-7-28 23:14
我觉得这个命题的意思是说,n如果是奇数,这个方程至少一个实根。
x趋于正无穷的时候,多项式的值是正无穷;x趋向于负无穷的时候,值是负无穷,之间必有零点

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original poster nttz posted 2024-7-29 11:11
12673zf 发表于 2024-7-28 23:14
我觉得这个命题的意思是说,n如果是奇数,这个方程至少一个实根。
x趋于正无穷的时候,多项式的值是正无穷 ...
有道理,但要说至少啊

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