-100 d/ 100 d/a Figure 2: Spectrum of r(t). 4. A message signal r(t) has the spectrum X(w) shown above in figure 2 (a) If the signal is input the output signal y(t). Clearly show all your steps. to a...

-100 d/ 100 d/a Figure 2: Spectrum of r(t). 4. A message signal r(t) has the spectrum X(w) shown above in figure 2 (a) If the signal is input the output signal y(t). Clearly show all your steps. to a device shown below in figure 3, draw the spectrum of (3) r(t) -100 100 2 cos(100) Figure 3: Device in problem 4. to recover r(t) back from y(t)? If yes, suggest how. If no, suggest (2) (b) Is it possible why.