Wei Quan-shun
Abstract
In this paper,we study the problems of Fourier series expansion of the functions,and obtain series means of Fourier series expansion of the functions and meanwhile we explain the problems asked by Dotor Din Xuan-hao in the article(1),then obtain a means to turn the function in any finite interval into a sine series or cosine series.
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In this paper,we study the problems of Fourier series expansion of the functions,and obtain series means of Fourier series expansion of the functions and meanwhile we explain the problems asked by Dotor Din Xuan-hao in the article(1),then obtain a means to turn the function in any finite interval into a sine series or cosine series.
Key concepts: Fourier series, Series (stratigraphy), Fourier sine and cosine series, Sine, Trigonometric functions, Conjugate Fourier series, Mathematics, Trigonometric series