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1、2-13第二章连续时间系统的时域分析32-1(1) 乂(,)= (4/一3/2)(),以勺)=(-2e+方已一方一:)(D乙乙(2) y.i(t) = (4f + l)e,(E),八.(r) = -(+ 2)ef+2e-1()(3) ji(z) = e-( sinzu (/ ) t y(t ) = e-/ sin/u (t)2-2 i(Q + 5/()+ 6ia)= 6(z), i(t) = (e r-2e-2/+e 3,)u(t)A2-3 h(t) = (t-bl)eu(t)2-4 A(i) = e-20-2)u(3-z)2-5 /) = *-*+2e-”2-6 /(f) = (e-e2l)
2、u(i)2- 7 A (z) = u (i) + u (z - l)+(z 2) 一 (z 3) u(t 4) u( 5)2-8 A(O = u(z)-u(z-l)2-9 (1) y(z) = (l - L)(2) -LizO 1, (L-LX), (e - 2e-加+ 1)”) 2-10 y(0_)=0.5, ,(0-) = -0. 5, A=0.5 2-11 (1) h(z) = 2(z)-6e-2ru(z)/ 3Q X(2)y*.i(f)= t-e 21 ju(t)(3) y2(t) = (L5 - - L 5e- )()+ ( - l5+z 1. 5e2r )u (r 1) 2-12 3zI(i)=5(f)-2e/u()+e-2(u(4-2)t,042 1h (z) = 2 z,K420.z22-14提示:利用卷积积分的微积分特性来求。2-15 (1) y展力=er“Q)(2) 3(t) = 2e-eu(t)-ie-fuG)(17 、2- 16 h (i) = |u(/)144;2- 17 A(z)=6(z)6( 2), y=()= ( 1)3) (/ 5) + (f 7)