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[不等式] 一道二次绝对值恒成立的参数的最小值

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郝酒 Posted 2023-5-4 17:41 |Read mode
对$b,c\in R$,若$|x^2+bx+c|\leq M$对任意的$x\in[0,4]$恒成立,求$M$的最小值.

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hbghlyj Posted 2023-5-4 17:56

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 Author| 郝酒 Posted 2023-5-4 18:16
hbghlyj 发表于 2023-5-4 17:56
Related
https://kuing.cjhb.site/forum.php?mod=viewthread&tid=6091
http://kuing.infinityfree ...
谢谢啦。
突然发现发错版块了,劳烦版主移动到初等数学里

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好了  Posted 2023-5-4 18:18

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kuing Posted 2023-5-4 18:30
当年推过一般结论,见:
《数学空间》2011 年第 5 期 P.9《几道二次函数与绝对值结合的题目的研究》

相关题:《撸题集》P.203 题目 2.3.2

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