8.(a) Find the Fourier transform for the function cos x, -n/2 < x < 7/2 |x| > 7/2 f(x) = 0, (b) Use the result in (a) together with Parseval's theorem to evalu- ate po cos²(xT/2) dx. (1 – x²)2 2 cos(tw/2) Ans: (a) 8.

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Chapter2: Second-order Linear Odes
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8.(a) Find the Fourier transform for the function
f(x) = {
cos x, -/2 <x<t/2
0,
x| > 7/2
(b) Use the result in (a) together with Parseval's theorem to evalu-
ate
*
cos-(x7/2)
dx.
(1 – x²)²
2cos πυ /2)
Ans: (a)
(b)
Transcribed Image Text:8.(a) Find the Fourier transform for the function f(x) = { cos x, -/2 <x<t/2 0, x| > 7/2 (b) Use the result in (a) together with Parseval's theorem to evalu- ate * cos-(x7/2) dx. (1 – x²)² 2cos πυ /2) Ans: (a) (b)
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