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[函数] 二次函数零点问题

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敬畏数学 posted 2020-3-17 11:38 |Read mode
$ f(x)=ax^2+bx+c,a,b,c$,均为正自然数,且此二次函数有两个均大于$ -\dfrac{1}{2} $的零点,则$ a+b+c $的最小值

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kuing posted 2020-3-17 13:41
《撸题集》第 625 页题目 5.1.13

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original poster 敬畏数学 posted 2020-3-17 14:11
回复 2# kuing
谢谢!看了一下解答难度很大。

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