(a) Plot the input signal x[n]=n and the output signal y[n]=2,x[n] over the interval n=0, 1,2,3,4,5,6,7,8,9. Compute the total energy in the signal x[n] and y[n] (Hint: the total energy in a signal is equal to the sum of the squares of all the values contained in the signal). Use the disp command to display the two energies 3. (b) Repeat part (a) using the input signal x[n]=sin((2pi)/10n),n=0,1,2.9, Use the MATLAB function sin to compute the values of the input signal over the specified interval. Use the help sin facility to learn how to use the sin function