If f(x) and f'(x) are both continues in (-T, 7), which one of the following statements is tru for the convergence of the Fourier series: a, +E(a cos nx +b sin na)? O(A) f(x) → f(x+0). O (B) f(x) → f(x - ). O (C) f(x) → f(x). O (D) f(x) → [f(x +0) + f(x – 0)]. n=1

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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MATHEMATICAL METHODS :Please quickly , only choose the correct answer
If f(x) and f'(x) are both continues in (-7,7), which one of the following statements is true
for the convergence of the Fourier series: a, +E,(a cos nx +b sin nx)?
(A) f(x) → f(x+ 0).
O (B) f(x) → f(x– ).
O (C) f(x) → f(x).
O (D) f(z) → [f(x +0) + f(x – 0)].
n=D1
(A)
Transcribed Image Text:If f(x) and f'(x) are both continues in (-7,7), which one of the following statements is true for the convergence of the Fourier series: a, +E,(a cos nx +b sin nx)? (A) f(x) → f(x+ 0). O (B) f(x) → f(x– ). O (C) f(x) → f(x). O (D) f(z) → [f(x +0) + f(x – 0)]. n=D1 (A)
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