10. (a) Find the Fourier series for the function ƒ: R → R determined by ƒ(x): x² for x = [−π, π] and ƒ(x + 2π) = f(x) for all x = R and using facts considered in lecture, explain why the Fourier series coverges to f(x) at each point x = (-π, πT). = (b) Using the Fourier series representation from part (a), evaluate ∞ (−1)n n² n=1

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.3: Zeros Of Polynomials
Problem 3E
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10.
(a) Find the Fourier series for the function f: R→ R
determined by f(x) = x² for x = [-T, π] and f(x + 2) = f(x) for all
[−π,
ER and using facts considered in lecture, explain why the Fourier
series coverges to f(x) at each point x = (-7, 7).
(b) Using the Fourier series representation from part (a), evaluate
(−1)n
n²
W
n=1
Transcribed Image Text:10. (a) Find the Fourier series for the function f: R→ R determined by f(x) = x² for x = [-T, π] and f(x + 2) = f(x) for all [−π, ER and using facts considered in lecture, explain why the Fourier series coverges to f(x) at each point x = (-7, 7). (b) Using the Fourier series representation from part (a), evaluate (−1)n n² W n=1
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