[复习说明 ]含参数的数学问题中一个方面是已知该数学问题具有某种特性 ,依此求参数的范围(或参数的值 ) .此类问题遍及函数、方程、不等式、数列、三角、解几等等 ,历来是高考试卷中的一个热点 ,亦是高考复习中的一个热点 .学生容易把它与“分类讨论”混淆在一起而造成解题思 [Review Instructions] One aspect of the mathematical problem with parameters is that the mathematical problem has a certain characteristic, and the range of the parameters (or the value of the parameters) is then sought. Such problems span functions, equations, inequalities, series, triangles, Solutions, etc., have always been a hot spot in the high test paper, and are also a hot spot in the college entrance examination review. Students can easily confuse it with “classification discussion” and cause problem solving.