i. Show that if y(t) is a real function satisfying y = y, then cn = Cn for all integers n, where the bar denotes the complex conjugate. ii. Using the fact that derive a formula for Cn. •2п 1²th et(n-m)², dt = { 2π if m= n if m‡n

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 71E
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c) For a periodic function y(t) with period T, its Fourier series may be represented in complex
form as
y(t) = Σ
n=1∞
where w = 2π/T and all cn are complex constants defined for n integer.
derive a formula for Cn.
=
i. Show that if y(t) is a real function satisfying y
where the bar denotes the complex conjugate.
ii. Using the fact that
2πT
Cneinwt
ei(n-m)t dt S 2π
{
=
0
y, then c_n =
if m= n
if m‡n
Cn for all integers n,
= Cn
Transcribed Image Text:c) For a periodic function y(t) with period T, its Fourier series may be represented in complex form as y(t) = Σ n=1∞ where w = 2π/T and all cn are complex constants defined for n integer. derive a formula for Cn. = i. Show that if y(t) is a real function satisfying y where the bar denotes the complex conjugate. ii. Using the fact that 2πT Cneinwt ei(n-m)t dt S 2π { = 0 y, then c_n = if m= n if m‡n Cn for all integers n, = Cn
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