P2: Sketch the AM signal [A+m(t)]cosωct for the signal m(t) shown below corresponding to the modulation index by selecting a corresponding A assuming a carrier frequency of 80 Hz : (a) μ = 0.5 (b) μ = 1, what is the bandwidth of the modulated signal (c) μ = 2. Draw the positive envelope. (d) μ = ∞. What is the bandwidth of the modulated signal