单元复习2 方程与不等式

• 作 者: 邹兴平
• 出 处: 初中生天地
• 发表日期: 2017年Z5期
• 关键词: 不等式组 和解法 一元二次方程 整式方程 数学工具 代入消元法 最简公分母 解不等式 一元一次方程 必考内容

一、考点分析“方程(方程组)、不等式(不等式组)”是初中数学的核心知识,它们不仅是中考必考内容,而且是解决代数、几何以及实际问题的重要数学工具.对“方程(方程组)、不等式(不等式组)”的考查主要有以下三个层次:(1)考查“方程(方程组)、不等式(不等式组)”的有关概念和解法;(2)考查“列方程(方程组)、不等式(不等式组)”的能力;(3)考查“用方程(方程组)、不等式(不等式组)解决问题”的能力.

First, the test center analysis “equation (system of equations), inequality (inequality group) ” is the core knowledge of junior high school mathematics, they are not only the required test content, but also an important mathematical tool to solve algebra, geometry and practical problems. The following three levels are used in the examination of “equations (equations), inequalities (inequalities)”: (1) Examination of the concepts and solutions of "equations (equations), inequalities ) Examine the ability of the column equations (equations), inequalities (inequalities groups), and (3) the ability to solve problems with equations (equations), inequalities (inequalities).