3. Filtering. Copyright University of Colorado Denver. This is an exam question. The use of anyexternal resources such as Chegg is not allowed. Download and load into MATLAB the fileRemoteExam2Problem3.mat

the file contains a filter impulse response h. a) Use the freqz function to make a plot of the frequency response of the filter. b) Make a plot of signal x(1) = 100 cos(275t +%)sampled at 1000 Hz from t=0 to1=1 second c) Apply the filter to x(t) and plot the output of the filter from t=0 to 1=1 second d) Consider the AM modulator and filter cascaded system below. What should be the value of Wm make the output z[n] close to zero (small amplitude)?