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[绘图技巧] 时变微分方程组的幅频曲线如何画? |
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发表于 2007-9-7 12:32
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同样的疑问!
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发表于 2007-9-7 12:55
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发表于 2007-9-7 13:08
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数值解出来了,不过是时域解!
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