Could you please show all the steps clearly and specific Question 3. Thank you!!

Question

Could you please show all the steps clearly and specific Question 3. Thank you!!

For all the questions below, use a time resolution of 1ms for your time axis: t [-2:0.001:2]. Remember your script should be self-sufficient. The answers to the questions below should be displayed one after the other after each key stroke as we discussed in the Matlab tutorial video!! Question 1 (40 points). Plot the following signals using Matlab. Label the signals as a(t), b(t), ct), and d(t). When you run your script, it should automatically plot all four signals in a single figure window with properly labeled)and (y) axis-as shown below b(t) c(t) d(t) Question 2 (20 points). Use Matlab to calculate the energy of the signals a(t), b(t), c(t) and d(t) you plotted as part of Question 1. Label signal energies as a_energy, b energy, etc. When you run your script, it should automatically calculate and display energies of the signals a, b, c and d one at a time with each key stroke. Question 3 (40 points). Plot the following time modified versions of the signals in question 1. Matlab should display a single plot for each part of this question with each key stroke. a. a(t/2+1) b. -b(-t-1) C. C(-2t+4)-1 d. dt+2)+1 When you run your script, it should automatically plot each signal in a single figure window with properly labeled (x) and (y) axis -and should proceed to next plot when you press any key

Explanation / Answer

%Assuming the x axis range from -3 to 3 for all graphs

%subpot will help us plot all the four graph in the same window
% Takes parameter (m,n,pos) where m=number of rors, n= no. of column, pos = graph's position
%For four graph, we will have 2 rows and 2 columns
%Position : 1,2,3,4

%Time Plots
% Divide time into 4 parts, -3 to -1, -1 to 0, 0 to 1, 1 to 3
t1 = [-3:0.5:-1];
t2 = [-1:0.5:0];
t3 = [0:0.5:1];
t4 = [1:0.5:3];

%combine all the time range
t=[t1,t2,t3,t4]

%Plot function for a(t) in the divided time range
a_t1 = 0;
a_t2 = 1+t2;
a_t3 = 1-t3;
a_t4 = 0;

%combine all the signal graphs
a_t = [a_t1,a_t2,a_t3,a_t4];

%First graph : Postion = 1
subplot(2,2,1)
plot(t,a_t),axis([-3 3 -2 2])

%Plot function for b(t) in the divided time range
b_t1 = 0;
b_t2 = 1;
b_t3 = 1;
b_t4 = 0;

%combine all the signal graphs
b_t = [b_t1,b_t2,b_t3,b_t4];

%Second graph : Postion = 2
subplot(2,2,2)
plot(t,b_t),axis([-3 3 -2 2])

%Plot function for c(t) in the divided time range
c_t1 = 0;
c_t2 = -t2;
c_t3 = t3;
c_t4 = 0;

%combine all the signal graphs
c_t = [c_t1,c_t2,c_t3,c_t4];

%Third graph : Postion = 3
subplot(2,2,3)
plot(t,c_t),axis([-3 3 -2 2])

%Plot function for d(t) in the divided time range
d_t1 = 0;
d_t2 = -1;
d_t3 = 1;
d_t4 = 0;

%combine all the signal graphs
d_t = [d_t1,d_t2,d_t3,d_t4];

%Fourth graph : Postion = 4
subplot(2,2,4)
plot(t,d_t),axis([-3 3 -2 2])

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