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3.1 Introduction+A Historical Perspective
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3.1.1 Part-1
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3.1.2 Part-2
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3.2 The Response of LTI System to Complex Exponentials
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3.3 Fourier Series Representation of Continuous-Time Periodic Signals
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3.4 Convergence of the Fourier series
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3.5 Properties of continuous-time Fourier series
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3.6 Fourier series representation of discrete-time periodic signals
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3.7 Properties of discrete-time Fourier series
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3.8 Fourier series and LTI systems
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3.9 Filtering
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3.10 Examples of continuous-time filters described by differential equations
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3.11 Examples of discrete-time filters described by difference equations