学习初中代数,学生会遇到一些特殊的分式方程,若按照一般方法去解,往往演算过程繁杂,而且有的容易产生遗根。因此,对这些特殊的分式方程,必须教会学生抓住它的结构特征,采用特殊的方法去解决,以培养学生灵活运用所学知识的能力。一般较常采用的方法有如下几种: 一、使分子消元 In the study of junior high school algebra, students will encounter some special fractional equations. If they are solved according to the general method, the calculation process is often complicated, and some are prone to rooting. Therefore, for these special fractional equations, students must be taught to grasp its structural characteristics and adopt special methods to solve them so as to cultivate students’ abilities to use the learned knowledge flexibly. The methods that are commonly used are the following: 1. The elimination of molecules