Consider the periodic signal x(t) shown below Find the Fourier series representation of x(t) in complex exponential form, trigonometric form with only cosine terms, and trigonometric form with sine and cosine terms. Use the Matlab stem command to plot the magnitude and phase spectra of the signal x(t) from -16 rad/s to + 16 rad/s. Using your results from part (a)-(ii) above and Matlab, compute and plot the sum of the first five terms of the Fourier series (trigonometric form with cosine terms only), the sum of the first 25 terms of the Fourier series (trigonometric form with cosine terms only, and x(t) together on the same graph. For your plot use the Matlab axis command axis([0 4 -0.2. 1.2))