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3: Complex Fourier Series
•Euler’sEquation
•ComplexFourierSeries
•AveragingComplex
Exponentials
•ComplexFourierAnalysis
•FourierSeries↔
ComplexFourierSeries
•ComplexFourierAnalysis
Example
•TimeShifting
•Even/OddSymmetry
•Antiperiodic⇒Odd
HarmonicsOnly 3: Complex Fourier Series
•SymmetryExamples
•Summary
E1.10 Fourier Series and Transforms (2014-5543) ComplexFourier Series: 3 – 1 / 12
Euler’s Equation
3: Complex Fourier Series iθ
•Euler’sEquation Euler’s Equation: e =cosθ+isinθ [see RHB 3.3]
•ComplexFourierSeries
•AveragingComplex
Exponentials
•ComplexFourierAnalysis
•FourierSeries↔
ComplexFourierSeries
•ComplexFourierAnalysis
Example
•TimeShifting
•Even/OddSymmetry
•Antiperiodic⇒Odd
HarmonicsOnly
•SymmetryExamples
•Summary
E1.10 Fourier Series and Transforms (2014-5543) ComplexFourier Series: 3 – 2 / 12
Euler’s Equation
3: Complex Fourier Series iθ
•Euler’sEquation Euler’s Equation: e =cosθ+isinθ [see RHB 3.3]
•ComplexFourierSeries iθ −iθ
•AveragingComplex Hence: cosθ = e +e
Exponentials 2
•ComplexFourierAnalysis
•FourierSeries↔
ComplexFourierSeries
•ComplexFourierAnalysis
Example
•TimeShifting
•Even/OddSymmetry
•Antiperiodic⇒Odd
HarmonicsOnly
•SymmetryExamples
•Summary
E1.10 Fourier Series and Transforms (2014-5543) ComplexFourier Series: 3 – 2 / 12
Euler’s Equation
3: Complex Fourier Series iθ
•Euler’sEquation Euler’s Equation: e =cosθ+isinθ [see RHB 3.3]
•ComplexFourierSeries iθ −iθ
•AveragingComplex Hence: cosθ = e +e
Exponentials 2
•ComplexFourierAnalysis eiθ−e−iθ
•FourierSeries↔ sinθ = 2i
ComplexFourierSeries
•ComplexFourierAnalysis
Example
•TimeShifting
•Even/OddSymmetry
•Antiperiodic⇒Odd
HarmonicsOnly
•SymmetryExamples
•Summary
E1.10 Fourier Series and Transforms (2014-5543) ComplexFourier Series: 3 – 2 / 12
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