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  3. hi this signal and system the first pic is the...

Question: hi this signal and system the first pic is the...

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Hi,
This Signal and system.
The first pic is the number of the questions. and the Second pic the question for example (question number 1.21 I need to solve Q (A and C) only. And Question (1.22) (A and c) and question (1.25)(a,b,c,d) and question(1.26)(a,b,c,d). I hope you got it
Problems: 1.21 a and c 1.22 a and c 1.25 a,b,c,d 1.26 a,b,c,d
BASIC PROBLEMS 1.21. A continuous-time signal x(t) is shown in Figure P1.21. Sketch and label carefully each of the following signals (a) x(t -1) (b) x(2-t) (d) x(4-9 (e) [x(t) + x(一)]11(1) (c) x(2t +1) (f) x(t)[6(t + )一6(-2)] Si 1.22. A discrete-time signal is shown in Figure P1.22. Sketch and label carefully each of the following signals: (a) x[n 4] (d) x3n 1] (b) 13-n] (c) x(3n (e) x[n]u[3-n] (f) x[n-2]δ[n-2] ut
1.25. Determine whether or not each of the following continuous-time signals is periodic. If the signal is periodic, determine its fundamental period. (a) x(t) = 3 cos(41 + 풀) (b) x(t) = ej(-l) (c) x(t) [cos 2t-DF (d) x(t)-Ev{cos(41rt)n(t)} (e) x(1)-Er(sinGmtha(t)) (f) x(t) = Σ e-ar-n) u(2t-n) 1.26. Determine whether or not each of the following discrete-time signals is periodic. If the signal is periodic, determine its fundamental period. (a) x[n] = sin( n + 1) (b) x[n] = cos(-m) (c) x[n] = cos( ㎡) (d) x[n] = cos(Sn) cos侵n) (e) x[n] = 2cos(끅n) + sin(플n)-2cos(Sn+
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