hello all...

I have this two 2_pi periodic function ..

Which of the following functions has a fourier series for iis derivative ??

(i) f(x) = x^3 [-pi<=x<pi]

(ii) f(x) = 0 ; -pi<=x<0

= 1-x ; 0<=x<pi

It will be helpful if you explain every step :-)

Thanks in advance