The message signal m(t) = 3 cos (260t) + 6 cos(27120t) along with the carrier signal c(t) = 4 cos(271200t) are applied to a modulator that generates the double sideband suppressed carrier signal s(t). The demodulator is as shown in the figure below. It consists of a multiplier followed by a low pass filter, where the locally generated signal is c'(t) = 2 cos(21200t + /4) and the bandwidth of the low pass filter is 100 Hz. s(t) X v(t) c'(t) = 2 cos(21200t + /4) Low pass filter B.W 100 Hz - a. Find the bandwidth of m(t). b. Find the time-domain expression of the modulated signal s(t). c. Find the total average transmitted power. d. Find the signal at the demodulator output. y(t)