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求卷积(e^-t)u(t)*cos(t)u(t)
人气:423 ℃ 时间:2020-09-08 01:28:56
解答
s(t)=sin(t)u(t)*u(t-1) =∫(-∞→+∞)sin(x)u(x)u(t-1-(t>1) =-cos(t-1)+1 (t>1) t≤0时,s(t)=0
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