部分分式是初中数学竞赛的重要内容 ,在初中数学竞赛中常有应用 ,而且在今后学习微积分时还要经常用到 .部分分式中体现出来的把整体分解成部分来处理问题的方法也是一种重要的思想方法 ,这种方法对我们解决问题有指导意义 .下面我们介绍部分分式及其应用 .1　基础知识1 .1　与 Partial scores are an important part of the junior high school math competition. They are often used in junior high school math competitions, and they are often used in learning calculus in the future. Part of the fractional formula is also a method of dividing the whole into parts to deal with problems. An important way of thinking, this method has guiding significance for us to solve the problem. Here we introduce partial fractions and their applications. 1 Basic knowledge 1.