According to Parseval’s theorem the energy spectral density curve is equal to?(a) Area under magnitude of the signal(b) Area under square of the magnitude of the signal(c) Area under square root of magnitude of the signal(d) None of the mentionedThis question was addressed to me during an online exam.I would like to ask this question from Spectral Density and Autocorrelation topic in portion Signals and Spectra of Digital Communications

According to Parseval’s theorem the energy spectral density curve is

1.	According to Parseval’s theorem the energy spectral density curve is equal to?(a) Area under magnitude of the signal(b) Area under square of the magnitude of the signal(c) Area under square root of magnitude of the signal(d) None of the mentionedThis question was addressed to me during an online exam.I would like to ask this question from Spectral Density and Autocorrelation topic in portion Signals and Spectra of Digital Communications
Answer» Right answer is (b) Area under SQUARE of the magnitude of the signal Best explanation: According to Parseval/s theorem the ENERGY spectral DENSITY function can be given as equal to the square of the magnitude of the signal X(t).

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