QUESTION 4 Consider a periodic function, f(x) given as f(x) - {% -c<<0, << f(x) = (x+2c) where c is a constant. i. Sketch the graph of f(x) in the interval -3c<< 3c, then, determine whether f(x) is even, odd or neither. ii. Then, find the Fourier series of f(x). "

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Q: (c) f(x) = cos² (3x)

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