I NEED A MATLAB CODE. ( PLEASE DONT COPY PASTE SAME CHEGG ANSWERS ALSO PLEASE WRITE COMMANDS AND DEFINETIONS ( //command or info about code line ) )

= The message signal m(t) = 11(t - ) IICt - ), t in seconds, modulates the carrier signal c(t) = 5Cos(400nt) to obtain FM signal y(t) = 5Cos(400nt + (t)), where (t) = 21kg [ m(t)dt with kg = 50. The demodulator consists of a differentiator, a diode (assume ideal), a low pass filter (LPF) and a capacitor for DC blocking, successively. 1) Plot the message signal. Obtain and plot the magnitude spectrum of the message signal. 2) Obtain and plot the time-domain representation and magnitude spectrum of the phase t). 3) Obtain and plot the time-domain representation and magnitude spectrum of the modulated signal y(t). 4) Obtain and plot the time-domain representation and magnitude spectrum of the signal at each step of the demodulator. (Do the filtering in frequency domain.) Comment on the signal at each step. Compare the message signal and demodulated signal, and comment on them. 5) Do the steps above that can be done analytically, and compare to the simulation results and comment on them