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For each of the periodic signals shown in Fig. P2.7-4, find the exponential Fourier series and sketch the amplitude and phase spectra. Note any symmetric

For each of the periodic signals shown in Fig. P2.7-4, find the exponential Fourier series and sketch the amplitude and phase spectra. Note any symmetric property

(b) 20x -20n -10n 10n -1/4 (d) 1/4 2n

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