求这个傅立叶级数,求出来每一项都是0,觉得有点奇怪,有人帮忙看下吗 知乎 Template




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tomski求这个傅立叶级数,求出来每一项都是0,觉得有点奇怪,有人帮忙看下吗 知乎 coloring