留数定理及其应用

Residue Theorem And Its ApplicationAbstract:Residue theory is the main tool to study analytic function and themain way to solve function integral.This paper first gives the relevant knowledgeof residue theory,gives the definition of residue and residue theorem,thenintroduces the application of residue theorem in real integral,feels the role ofresidue theorem in problem-solving calculation through relevant examples,andfinally summarizes it.Key words:Residue theorem:Definite integral:Complex function