Using the following difference equations using recursion first Solve (for n = 0 to n = 4). Plot the stem plot of the output calculated by MATLAB (forn = 0 to n = 30) a) y[n] + 0.5y[n-1] = 2x[n-1]; x[n] = d[n], y[-1]= 0 b) y[n] + 2y[n-1] = 2x[n-1]; x[n] = 8[n], y[-1] = 0 c) y[n] + 1.2y[n-1] + 0.32y[n-2] = x[n]-x[n-1]; x[n] = u[n], y[-2] = 1, y[-1]=2

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