1.本单元重点、难点、热点分析本单元的重点:一元一次不等式(组)、一元二次不等式(组)、一元高次不等式、简单的绝对值不等式、简单的分式不等式的解法.对形式比较复杂的不等式,能够通过同解变形化归为可解的简单不等式.本单元的难点:解含参数的不等式,一般需要分类讨论,讨论的 1. The focus of this unit, the hot spot analysis of the focus of this unit: a unitary inequality (group), a quadratic inequality (group), a higher order inequality, simple absolute inequality, simple fractional inequality solution. The more complex forms of inequalities can be classified as solvable simple inequalities by the solution of deformations. The difficulty of this unit: Solving the inequalities with parameters generally requires classification and discussion