q18. Let f be a function with a period 2π such that f(x) = −1 if 0 < x < π, f(x) = 1 if π < x < 2π, f(0) = f(π) = 0. Then the Fourier series of f converges to f everywhere. true or false ?
q18. Let f be a function with a period 2π such that f(x) = −1 if 0 < x < π, f(x) = 1 if π < x < 2π, f(0) = f(π) = 0. Then the Fourier series of f converges to f everywhere. true or false ?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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q18. Let f be a function with a period 2π such that f(x) = −1 if 0 < x < π, f(x) = 1 if π < x < 2π, f(0) = f(π) = 0. Then the Fourier series of f converges to f everywhere. true or false ?
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