解析几何中的最值问题以直线或圆锥曲线作为背景 ,以函数和不等式等知识作为工具 ,具有较强的综合性 .这类问题的解决没有固定的模式 ,其解法一般灵活多样 ,且对于解题者有着相当高的能力要求 .正基于此 ,这类问题近年来成为了数学高考中的难点及竞赛中的热点 .一、基础知识探? The problem of the maximum value in analytical geometry takes a straight line or a conic curve as the background, and knowledge of functions and inequalities as a tool, has a strong comprehensiveness. There is no fixed pattern for solving such problems, and its solution is generally flexible and diverse. The subject has a very high ability requirement. Based on this, this type of problem has become a difficulty in the mathematics college entrance examination and a hot spot in the competition in recent years. First, the basic knowledge exploration?