Commercial amplitude modulation (AM) uses a large-carrier transmit waveform of the form: Xam (t) = (1 + kam(t)) cos (wat) . where m(t) is a zero-mean, unit-variance, WSS stochastic process for narrowband communications. For this stochastic process: 1. compute the mean at, (t) and variance o? (t) and show that this process is first-order cyclostationary. 2. compute the ensemble ACF Ry,(t,t -7) and show that the process is WSC. 3. compute the cyclic ACF RY (7) and the cyclic PSD p!")