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傅立叶分析 [1] 是数学中的一种研究方法，主要研究一般函数如何用更简单的三角函数之和来表示，而分解过程又被称为傅里叶变换。傅里叶分析源于人们对傅里叶级数的研究。傅里叶分析以约瑟夫·傅里叶的名字命名。
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