Problem 8.3 The periodic square wave shown in the figure below −1 1 has a Fourier series expansion is given by x(t) 1 2 -1 2 x(t) = Σ j2πnt n odd jπη (a) Find the Fourier transform of x(t). (b) Make a plot of X(f), the Fourier transform expressed in Hz, versus ƒ for |f|< 10.