付立叶级数的奇偶谐波

Parity harmonics of fourier series

在付立叶级数中,除了正弦波、余弦波外,还有的函数的付立叶级数只有奇次波而没有偶次波,或只有偶次波而没有奇次波,本文给出什么样的函数只有奇次波而没有偶次波,什么样的函数只有偶次波而没有奇次波,以及偶次波和奇次波的系数计算公式。

In the fourier series, besides sine wave and cosine wave, fourier series of some fimctions only have the odd subwave don＇t have even subwave. Or they only have even subwave don＇t have odd subwave. The paper shows what functions only have odd subwave don＇t have even subwave what functions only have even subwave don＇t have odd subwave and the coefficient formula of both.