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$f(x)=\dfrac{\pi}{4}-\dfrac{2}{\pi}\left (\sin x +\dfrac{1}{9}\sin 3x+\dfrac{1}{25}\sin 5x+\ldots\right ) +\left (\cos x -\dfrac{1}{2}\cos 2x+\dfrac{1}{3}\cos 3x-\ldots\right )$

$\mbox{None of the above}$

$f(x)=\dfrac{\pi}{4}+\left (\sin x -\dfrac{1}{2}\sin 2x+\dfrac{1}{3}\sin 3x-\ldots\right )$

$f(x)=\dfrac{\pi}{4}-\dfrac{2}{\pi}\left (\cos x +\dfrac{1}{9}\cos 3x+\dfrac{1}{25}\cos 5x+\ldots\right )$

$f(x)=\dfrac{\pi}{4}-\dfrac{2}{\pi}\left (\cos x +\dfrac{1}{9}\cos 3x+\dfrac{1}{25}\cos 5x+\ldots\right ) +\left (\sin x -\dfrac{1}{2}\sin 2x+\dfrac{1}{3}\sin 3x-\ldots\right )$

Test:	DELA-Section 5.4-Fourier series
Number of Questions:	2
Time:

	$f(x)=-\dfrac{\pi}{4}+\sum_{n=1}^{\infty}\left [\dfrac{2\cos(2n-1)x}{\pi(2n-1)}+\dfrac{(-1)^{n+1}\sin nx}{n^2}\right ]$
	$f(x)=-\dfrac{\pi}{4}+\sum_{n=1}^{\infty}\left [\dfrac{2\cos(2n-1)x}{\pi(2n-1)^2}+\dfrac{(-1)^{n+1}\sin nx}{n}\right ]$
	$f(x)=-\dfrac{\pi}{4}+\sum_{n=1}^{\infty}\left [\dfrac{(-1)^{n+1}2\cos(2n-1)x}{\pi(2n-1)^2}+\dfrac{\sin nx}{n}\right ]$
	$f(x)=-\dfrac{\pi}{4}+\sum_{n=1}^{\infty}\left [\dfrac{(-1)^{n+1}2\cos(2n-1)x}{\pi(2n-1)}+\dfrac{\sin nx}{n^2}\right ]$
	$\mbox{None of the above}$

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