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解一元二次不等式作为解决问题的基本运算,在新课改的高考的考查中通常蕴含在题目的计算过程中,而含有参数的问题又是高考中常考的知识点.现就含参数的一元二次不等式讨论其解法及常见变式应用.一、含有一个参数的一元二次不等式的解法把不等式问题转化为方程后,此类问题大致可分为三种情况.1.转化为方程后能够直接求出两根,只需讨论两根的大小即可确定解集.
The solution of the second inequality of Yiyi is the basic operation to solve the problem. In the examination of the college entrance examination of the new curriculum reform, it is usually implicated in the calculation process of the topic. The problem involving parameters is also the knowledge point of the examination in the college entrance examination. The quadratic inequality discusses its solution and the application of common variants. First, the solution of a quadratic inequality with one parameter After converting the inequality problem into an equation, such problems can be roughly divided into three cases. 1. After being transformed into an equation, Find two roots directly, just discuss the size of two roots to determine the solution set.