作业帮卷积积分若y (t) = f (t)*h(t)则y (2t) = 2f (2t)*h(2t)
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卷积积分若y (t) = f (t)*h(t)则y (2t) = 2f (2t)*h(2t)
卷积积分
若y (t) = f (t)*h(t)
则y (2t) = 2f (2t)*h(2t)
卷积积分若y (t) = f (t)*h(t)则y (2t) = 2f (2t)*h(2t)
用拉氏变换的尺度变换性质
2f (2t)*h(2t)＝>1/2F(s/2)H(s/2)=1/2Y(s/2)=>y(2t)
也可以在时域用积分直接证明,但繁琐