If \(f\left( x \right) = \frac{l}{4} - x\), when \(0 < x < \frac{l}{2}\)\( = x - \frac{{3l}}{4}\) ,when \(\frac{l}{2} < x < l\)then the value of a0 in the Fourier series of this function is

If \(f\left( x \right) = \frac{l}{4} - x\), when \(0 < x < \frac{l}{2

1.	If \(f\left( x \right) = \frac{l}{4} - x\), when \(0 < x < \frac{l}{2}\)\( = x - \frac{{3l}}{4}\) ,when \(\frac{l}{2} < x < l\)then the value of a0 in the Fourier series of this function is
A.	0
B.	\(\frac{{\pi l}}{6}\)
C.	\(\frac{l}{6}\)
D.	\( - \frac{{{l^2}}}{4}\)
Answer» B. \(\frac{{\pi l}}{6}\)

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If \(f\left( x \right) = \frac{l}{4} - x\), when \(0 < x < \frac{l}{2}\)\( = x - \frac{{3l}}{4}\) ,when \(\frac{l}{2} < x < l\)then the value of a0 in the Fourier series of this function is

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