5.1-3 Over an interval r| s 1, an angle-modulated signal is given by PEM (1) = 10 cos 13,000r1 It is known that the carrier frequency we = 10,000. (a) If this were a PM signal with kp = 1000, determine m(t) over the interval elS1. (b) If this were an FM signal with ky = 1000, determine m(t) over the interval (rl s1. %3! %3D