Question

Hello

Only need the answer of question 5 and 6 also with the graph.

Write MATLAB code to plot the following waveforms. Submit your code and plots in a single PDF file. 1. (8 pts) Rectangular pulses: a. rect(t) b. rect(t-T) c. rect(t/t) For T and T, choose any values that make sense. 2. (12 pts) Triangular pulses: a. A(C) b. At-T) C. Aſt/t) For T and T, choose any values that make sense. 3. (8 pts) Impulse approximation: a. 8(t) b. 6(t-T) For T, choose any value that makes sense. 4. (12 pts) Unit steps: a. (t) b. ut-T) C. A.ut-T) For T and A, choose any values that make sense. 5. (12 pts) Signums: a. sgn(t) b. sgn(t-T) C. A.sgn(t-T) For T and A, choose any values that make sense. 6. (8 pts) Causal exponential: a. eu(t) b. A.enault -T). For T, a, and A, choose any values that make sense.

Answer 1

2*sgn(t-3)

sgn(t-3) 0.5 -0.5

sgn(t) NE

2e atu(t-4) 1.40-05 1.2e-05 10-05 80-06 60-06 40-06 20-06

e at * u(t)

Code

t = -5:0.1:5;
% 5 a)
plot(t,sign(t))
title('sgn(t)')

% 5 b)
figure();
plot(t,sign(t-3))
title('sgn(t-3)')

% 5 c)
figure();
plot(t,2*sign(t-3))
title('2*sgn(t-3)')

alpha = 3;
t = -5:0.1:5;

% 6 a)
plot(t,exp(-alpha*t).*(t>=0))
title('e^-at * u(t)')

% 6 b)
figure();
plot(t,2*exp(-alpha*t).*((t-4)>=0))
title('2e^-at * u(t-4)')