Derive the spectrum of v(t) = 5 + 2 cos(2π (20)t) and plot it as a function of frequency....

Derive the spectrum of v(t) = 5 + 2 cos(2π (20)t) and plot it as a function of frequency. Compare this result to the spectral plot for the AM signal in Fig. 1.

Fig. 1 Spectrum of the AM signal in (3.16) and Fig. 2, where fc= 200 Hz and fΔ = 20 Hz.

Fig. 2 AM signal fc= 200 Hz and fΔ = 20 Hz. The modulating signal has been superimposed as a light colored line to show its effect.