The PSD and the power of a signal g(t) are, respectively, S_g (w) and P_g. Depict the PSD and the power of the signal ag(t) are, respectively?

Answer:a²S_g (w)  and a²P_g

PSD  of a signal g(t) =S_g (w)=|g(t)|²

Power of of a signal g(t) =P_g= Integration of power spectral density.

So for ag(t)  S_g (w) becomes a²|g(t)|^{2  =} a²S_g (w)

and power becomes a²P_g