模拟信号的波形图如图所示,它的时间域描述形式是: A.u(t)=2(1-e-10t)*1(t)
A.u(t) =2(1-e-0.1t) * 1(t) B.u(t) =[2(1-e-10t) -2]* 1(t) C.u(t) =2(1-e-10t) * 1(t) -2*1(t-2) D.正确答案D
模拟信号的波形图如图所示,它的时间域描述形式是: A.u(t)=2(1-e-10t)*1(t)
A.u(t) =2(1-e-0.1t) * 1(t) B.u(t) =[2(1-e-10t) -2]* 1(t) C.u(t) =2(1-e-10t) * 1(t) -2*1(t-2) D.正确答案D