6. Consider the periodic function defined -4 when - 7

6. (a) Consider the periodic function defined 4 when IT X 0 4 when 0 X Tt with period 27T. State whether the waveform is an odd or even function. Obtain the Fourier series for the waveform in complex form. Show that the complex Fourier series in (b) is equivalent to: 16 1 1 = (sin x + sin 3x + sin 5x +