非周期函数展开成Fourier级数的方法

A Method for Expanding a Non periodic Function into Its Fourier Series

主要讨论如何将定义在［ａ，ｂ］上的满足Ｄｉｒｉｃｈｌｅｔ条件的非周期函数ｆ（ｘ）展开成Ｆｏｕｒｉｅｒ级数。

This paper mainly discusses how to expand a non periodic function f(x) into its Fourier series and gives out its different Fourier expansions,where f(x) is defined on the closed interval and satisfying the Dirichlet conditions.