考研数学中的幂级数求和一题多解

摘要

幂级数求和是考研数学中的一个重要内容，也是学生学习中普遍感觉比较困难的知识点。文章以近几年数学考研试题中的幂级数求和问题为例，采用一题多解的形式，介绍了求幂级数和函数的三种常用方法。%The summation of power series is an important content of the mathematical postgraduate exam,and students gen-erally feel very difficult in learning the knowledge point. To the summation problems of power series in recently mathemati-cal postgraduate exams,this paper introduces three common methods by the form of multi solutions to one problem.