Q.1- for the signal below:- 4M. X) 4 cos-30nt -2cos³10πt +5 a) - Find the complex exponential Fourier series b) - sketch the double sided spectra Q.2-Draw and discuss the working of the Mixer in Superheterodyne receiver. 3M. Q3-Draw FDM, and the baseband signal for thee channel AM-DSB- LC,FM, and DSB SSB(LSB)