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Question - Find the Fourier series for f(x) = |cos(x)| in the interval (-π, π).
Right, I attempted the question and the integration that followed. I'm having trouble in the integration itself..
Firstly I found that f(x) is an even function, so the sine term(bn) of the Fourier expansion would be zero and that I can use a property of integration to write
as
and similarly so for an.
I computed a0 to be zero, but the trouble is, I'm getting an to be zero too, and if that is so, there will be no Fourier series! Could someone please point out my mistake?
Right, I attempted the question and the integration that followed. I'm having trouble in the integration itself..
Firstly I found that f(x) is an even function, so the sine term(bn) of the Fourier expansion would be zero and that I can use a property of integration to write
I computed a0 to be zero, but the trouble is, I'm getting an to be zero too, and if that is so, there will be no Fourier series! Could someone please point out my mistake?
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