A.時(shí)不變系統(tǒng) B.因果系統(tǒng) C.穩(wěn)定系統(tǒng) D.線性系統(tǒng)
如圖所示的信號(hào),其單邊拉普拉斯變換分別為F1(s), F2(s), F3(s),則()
A.F1(s)= F2(s)≠F3(s) B.F1(s)≠F2(s)≠F3(s) C.F1(s)≠F2(s)= F3(s) D.F1(s) = F2(s)= F3(s)
A.17W B.9W C.4W D.10W