Q7. (15 marks) The following f(t) is a periodic function of period T = 27, defined over the period -

period (15 marks) The following f (t) is a periodic function of period T 277, defined over the 2t when f(t) of period T = 27. 2t when O < t < Express f (t) as a Fourier series expansion. Showing result only without reasoning or argument will be insufficient.