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傅里叶级数是什么

更新时间: 2020-07-15 00:00:00     

由法国数学家傅里叶发现的一种特殊的三角级数 ,即任何周期函数都可以用正弦函数和余弦函数构成的无穷级数来表示。傅里叶级数具有正交性、奇偶性和收敛性的特性。因为根据欧拉公式,三角函数又能化成指数形式,所以也称傅立叶级数为一种指数级数。

关键词: 级数 什么

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