A: Find the range of values the carrier frequency can take and express in time the signal at the modulator output for an approp1iate canier frequency. Draw the sign you wrote the time expression using MATLAB. B: x( t) = cos(2rr300t) + cos (2rr450t) message signal is converted into Carrier Suppressed Double Sideband (SC-DSB) signal by directly multiplying with a 20 kHz frequency carrier and passed through the filter you obtained in C). Express the signal at the filter output in time. Plot the time domain and frequency spectrum of the signal at the filter output using Matlab. (!!!Please include the MATLAB codes as well.)

H(1) 0,02"x 2 +0, 02X . f/kHz) -23 -21 -20 -19 19 20 21 23