For the i. ii. 111. diagram, two carrier frequencies are w = 30 Hz and w = 50 Hz. Write down a time-dorain modulated signal Write down a frequency-domain modulated signal Draw the all frequency-domain waveform -10 -5 x (t) x(t) X1(w) cos(wit) cos(wt) X2(w) W 05 10 -10 -5 0 5 10 W y(t)