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Signals and Systems by Smarajit Ghosh

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2.5 EXPONENTIAL FORM OF FOURIER SERIES

To represent the Fourier series in concise form, the sine and cosine terms of trigonometric form, the Fourier series are expressed in terms of exponential function that results in exponential Fourier series.

 

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Using Eqs. (2.39) and (2.40), Eq. (2.1) can be written as

 

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Using Eqs. (2.43) ...

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