7. We can use MATLAB to find the convolution of two functions ) and t) using symbolle variables. For example, if we want to evaluate the expression: u(t)-red -() - red ( Flost, we need to define the functions as follows: syna ti u(t) = heaviside(t): xi(t) = 2(t+1)-u(t-1): x2(t) = (t+2)-u(t-2): The function heaviside is the unit step function in MATLAB. Then we defined the rect function based on the unit step function. Next, we will use symbole integration to evaluate 23(4) 2460) - (pvelt - syd ayas tau y(t) = int(x1(tau)2(t-tau)tau, -int, inf): Then, finally we plot the output in addition to the two functions sing subplots. subplot(3,1,1) fplot ((t). (-4,4)) xlabel("Time (A)): ylabel("xi(t)") subplot(2,1,2) fplat (x2(t). (-4,4)) zlabel("Time (a): ylabel("x2(t)) subplot(3.1.3) Iplot(y(t). (-4,4)) Elabel("Time (a): ylabel("y(t)) EE207 - Signals and Systems Page 5 of 3 Use MATLAB to evaluate the following expression. y(t)-1-1+1) red (t-05)]. *{ce + 2yreut (4+0) Then, verify your answer by hand, and show all the steps 7. We can use MATLAB to find the convolution of two functions ) and t) using symbolle variables. For example, if we want to evaluate the expression: u(t)-red -() - red ( Flost, we need to define the functions as follows: syna ti u(t) = heaviside(t): xi(t) = 2(t+1)-u(t-1): x2(t) = (t+2)-u(t-2): The function heaviside is the unit step function in MATLAB. Then we defined the rect function based on the unit step function. Next, we will use symbole integration to evaluate 23(4) 2460) - (pvelt - syd ayas tau y(t) = int(x1(tau)2(t-tau)tau, -int, inf): Then, finally we plot the output in addition to the two functions sing subplots. subplot(3,1,1) fplot ((t). (-4,4)) xlabel("Time (A)): ylabel("xi(t)") subplot(2,1,2) fplat (x2(t). (-4,4)) zlabel("Time (a): ylabel("x2(t)) subplot(3.1.3) Iplot(y(t). (-4,4)) Elabel("Time (a): ylabel("y(t)) EE207 - Signals and Systems Page 5 of 3 Use MATLAB to evaluate the following expression. y(t)-1-1+1) red (t-05)]. *{ce + 2yreut (4+0) Then, verify your answer by hand, and show all the steps