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[数论] 这个怎么看a,b ,c的数值

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baxiannv posted 2022-5-28 23:15 from mobile |Read mode
Last edited by hbghlyj 2025-3-9 05:51

2个渐进线说明有一个值是重复的,我不理解为什么1是重复的,而不是4,有什么特征吗
还有为啥2L的(x-1)²(x-4)在x=1处不变号呢? 所以两侧趋近一个数,那那个值一定重复?

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Tesla35 posted 2022-5-28 23:20
$(x-1)^2(x-4)$在$x=1$两侧不变号,在$x=4$两侧变号

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original poster baxiannv posted 2022-5-28 23:25 from mobile
Tesla35 发表于 2022-5-28 23:20
$(x-1)^2(x-4)$在$x=1$两侧不变号,在$x=4$两侧变号
两侧趋近于一个数,那个值一定重复?

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hbghlyj posted 2025-3-9 05:46
baxiannv 发表于 2022-5-28 15:25
两侧趋近于一个数,那个值一定重复?
两侧趋近于一个数,那个值一定重复偶数次

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