Simplify your expressions for the various Fourier series coefficients as much as possible. Calculate a0, an, and bn of the trigonometric Fourier series. Find an expression for the an's of the trigonometric Fourier series. Find an expression for the bn's of the trigonometric Fourier series. Use Matlab's stem to plot the an's of the trigonometric Fourier series. Use Matlab's stem to plot the bn's of the trigonometric Fourier series. Use Matlab's stem to plot the magnitude spectrum, C, for n=0, 1, 20. Use Matlab's stem to plot the phase spectrum, Ćā , for n=0, 1, 20.