3. Sketch the following functions and determine the Fourier series expansions of the following: (a) || on (-л, π] (b) | cost (c) Jo -T/2

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 71E
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Please do #5
3. Sketch the following functions and determine the Fourier series expansions of the following:
(a) || on (-л, π]
(b) | cost
(c)
f(t) =
-T/2<t<0
+1 0≤t≤T/2
4. In Eq. 1, express the cosine and sine in terms of complex exponentials, and show that the function
f(t) can be written as
k=∞
where
f(t) = Σ
Σ cheint
k=-8
1
T/2
f(t)e-jkt dt
Ck
=
T
5. Determine the complex Fourier expansion for the functions in Problem 3.
(3)
(4)
Transcribed Image Text:3. Sketch the following functions and determine the Fourier series expansions of the following: (a) || on (-л, π] (b) | cost (c) f(t) = -T/2<t<0 +1 0≤t≤T/2 4. In Eq. 1, express the cosine and sine in terms of complex exponentials, and show that the function f(t) can be written as k=∞ where f(t) = Σ Σ cheint k=-8 1 T/2 f(t)e-jkt dt Ck = T 5. Determine the complex Fourier expansion for the functions in Problem 3. (3) (4)
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