Find the Fourier series of the periodic function f(t)=3t 2
,−1≤t≤1. [12 marks ] (b) Find out whether the following functions are odd, even or neither: (i) 2x 5
−5x 3
+7 [6 marks ] (ii) x 3
+x 4
[6 marks ] (c) Find the Fourier series for f(x)=x on −L≤x≤L.