1　本单元知识网络2　重点、难点、热点分析本单元的重点是 :不等式的基本概念 ,不等式的基本性质 ,重要不等式 ,不等式证明的常用方法 .难点是 :不等式的性质与重要不等式的灵活应用 ,不等式证明常用方法的恰当选择 .本单元是后继章节学习的基础 ,也是历年高考必须涉及的内容 1 This unit’s knowledge network 2 Key points, difficulties, and hot spot analysis The focus of this module is: basic concepts of inequalities, basic properties of inequalities, important inequalities, common methods of inequality proof. Difficulties are: the inequality of the nature and the flexible application of important inequalities, The inequality proves the proper choice of commonly used methods. This module is the basis for the subsequent chapter study, and it is also the content that must be covered in the previous college entrance examination.