几种积分的特殊求解方法

On Some Special Integration Methods

求解积分问题时比较麻烦,甚至无从下手。只要抓住积分问题的不同的特点,找出规律就可以比较容易地求出来。给出求解不定积分和定积分问题的四种特殊方法———待定系数法、分项积分法、参数积分法、积分符号下的积分法。

It can be easy to solve the problem of integration as long as we find the characteristics and rules of integration. This paper gives four special methods to solve the problem of indefinite integration and definite integration, such as ： method of undetermined - coefficient; integration method by subentry; integration method by parameter; integration method by sign of integration.