二次函数在闭区间上的最值问题分析与求解

Problem Analysis and Solving of the Most Value of Quadratic Function on the Closed Interval

二次函数在闭区间上的最值问题，有四种类型：（1）定轴，定区间；（2）定轴，动区间；（3）动轴，定区间；（4）动轴，动区间。文章对此进行了探讨。

Quadratic function on the closed interval of the most value problem, there are four types： （ 1 ）fixed axis, the given interval; （ 2 ） fixed axis, dynamic range; （ 3 ） moving axes, fixed interval; （ 4 ）moving axes, fixed interval.The paper talks about this issue.