A periodic function f(t) = i. ii. iii. is defined as follows: for-1≤t <0 for 0≤t<1 (3 {² (6 where f (t + 2) = f (t). Sketch f(t) and state the period. Comment fully on whether it is odd/even/none of these. Find the first four non-zero coefficients for the Fourier series expansion.

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