A carrier wave, c (t), given by
c(t) = [12 sin (4π x 106t)]
is amplitude modulated by a given sinusoidal volts message signal. The resultant (AM) carrier wave has a modulation index of 75% and a bandwidth that is 2% of the carrier wave frequency. The equations for this message signal is
(1) on (t) = [16 sin (4π x 104 )] volt
(2) on (t) = [9 sin (4π x 104 t)] volt
(3) on (t) = [9 sin (8π x 104 t)] volt
(4) on (t) = [16 sin (8π x 104 t)] volt