二次函数在特定区间上的最大值和最小值问题及相关的各种题型历来是高考数学的一个重要考点,同时也是考查我们基础知识和解题能力的一个很好的素材．如何使我们领会和切实掌握这个知识点,并从中受到中学数学的基本训练,由此培养我们良好的思维品质?这就要求我们在平时的学习以及高考复习中要注意引导自己建立二次函数的一个 The problem of the maximum and minimum values ​​of the quadratic function in a specific interval and the related questions have always been an important test point for college entrance examination mathematics. It is also a good material for examining our basic knowledge and problem solving abilities. How do we make us understand and grasp this knowledge point, and receive basic training in middle school mathematics, and cultivate our good thinking quality? This requires us to pay attention to guiding ourselves in the establishment of quadratic function in our usual study and review of college entrance examination. One