大学物理 ›› 2012, Vol. 31 ›› Issue (11): 1-1.

• 著者文摘 •    下一篇

涉及周期函数积分的变换公式

吴崇试   

  1. 北京大学物理学院,北京100871
  • 出版日期:2012-11-25 发布日期:2012-11-20

Applying transformation formula to the integrals of periodic integrand

  • Online:2012-11-25 Published:2012-11-20

摘要: 受到一则积分计算的启发,提出了能应用于周期函数积分的变换公式,包括其等价形式,建立起周期函数在半周期内的积分与相应的无穷积分之间的变换公式,给出了计算这类积分的新途径.

关键词: 周期函数, 定积分, 无穷积分, 变换公式

Abstract: A formula applying to the integrals of periodic integrand is deduced by inspiring the evaluation of a specific integral.This formula,as well as its equivalent form,provides us a new trick of evaluation of integrals by transforming the integral of a periodic integrand to that with one limit at infinity,or in converse way.

Key words: periodic function, definite integral, infinite integral, transformation

中图分类号: 

  • O411.1