a signal m(t) has bandwidth B(in Hz). consider s(t)=m(t)cos^3 ct. a)draw power density spectral density of s(t) for typical shape of Sm().

a signal m(t) has bandwidth B(in Hz). consider s(t)=m(t)cos^3 ωct.a)draw power density spectral density of s(t) for typical shape of Sm(ω).b)what filter on s(t), if any ,will yield Km(t) cos ωct for some constant k?what is the minimum usable value of ωc?