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Home > Wen Yuan (High School Edition) > 2019 No.10 > 含参数的一元二次不等式在限定区间内恒成立问题的解法

  • 含参数的一元二次不等式在限定区间内恒成立问题的解法

    Author(s)：

    祝仰河

    Publication Title：

    Wen Yuan (High School Edition) 2019 No.10

    Affiliations：

    广东省深圳市宝安职业技术学校 广东 深圳 518000

    Abstract：

    主要研究含参数的一元二次不等式在限定区间内恒成立问题的一般解法,核心是转化为有限定区间的二次函数问题.借助二次函数,结合数形结合的思想解决这类问题,主要有两种解法:对称轴法、判别式法.处理好变轴与定区间之间的关系以及利用函数的单调性是解决这类问题之关键.

    Keywords：

    二次函数;对称轴法;判别式法;变轴;定区间

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    [1] 祝仰河.含参数的一元二次不等式在限定区间内恒成立问题的解法[J].Wen Yuan (High School Edition),2019(10),.

文渊(高中版)
Wen Yuan (High School Edition)

Language: 中文

CN：11-9276/G

ISSN：2096-6288

Publication Frequency: 月刊

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