2. Consider a message signal x(t) = 2 sin(200nt) + 4cos(600nt) is used to modulate a carrier signal with carrier frequency of I MHz. a) Find both the time domain and the frequency domain expressions for i) DSB-SC ii) DSB-TC, use K = 4, m = 0.25 ii) PM, use k, = 2nX 0.01 rad/Volt 1X10 Hz/Volt %3D iv) FM, use k, = (2+2)X4=16 points) b) Plot the time domain plot for all of them. Note there will be total of 4 time (0.5X4-2 points) domain plots. c) Plot the amplitude response for all of them. Note there will be total of 4 amplitude response plots. d) Plot the phase response plot for PM and FM only. Note there will be total of 2 phase response plots. (IX4-4 points) (IX2-2 points)