选择题:已知某周期信号的傅里叶级数展开式为x(t)=A/2+∑4A/(nπ)2sinnπ/2sinn,试求该 题目分类:机械设计 题目类型:选择题 查看权限:VIP 题目内容: 已知某周期信号的傅里叶级数展开式为x(t)=A/2+∑4A/(nπ)2sinnπ/2sinn,试求该信号的直流分量、第一至第五次谐波分量的幅值。 参考答案:
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