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1- for the signal below:- X = 6 cos 30mt-2cos'10nt +10 a) - Find the complex exponential Fourier series b) - sketch the double

1- for the signal below:- X = 6 cos 30mt-2cos'10nt +10 a) - Find the complex exponential Fourier series b) - sketch the double sided spectra c) - calculate the average power using Parsevals theorem. 2- Determine the classification of the signal below with drawing. X=1-2 t>to> 0 and zero otherwise. Draw and discuss the working of the Mixer in Superheterodyne receiver.

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