I need the MATLAB codes for TASK 3 only t Task1 Write the symbolic math expression for one period 1 of the periodic signal x t shown in Figure 4 1 xp 1 0 5 0 5 1 1 0 75 0 5 0 25 0 t Figure 4 1 Periodic signal x t 0 25 0 5 0 75 1 Task 2 Write the symbolic Matlab expression corresponding to three periods of x t Use the variable xp to represent the said expression Task 3 Determine the exponential fourier series coefficient Cn Plot the magnitude and phase of Cn for 10 n 10