Can you please help me with this Matlab Assignment?

2.) Generate the following function sequences. Plot signal samples using the stem function with the time information, for example, stem(n, xi) x1 [n] = u[n]-u[n-30]; X2[n] = u[n + 101-11[n-20]; a. b. 3. ) A causal LTID system is described by the second-order discrete-time system as y[n]-0. 8v[n-1] 0.12v[n-2] = x[n] Use the method described in section M3.2 to compute the impulse response through filtering for n a. (0:25) b. Use Matlab function impzO to compute impulse response for the system, h[n], for n (0:25). Plot h[n]. Did you get the same result as that in (a)? Plot h[n], and the difference between h[n]'s in part (a) and part (b) Suppose the input for the system is c. with initial condition [-1]-y[-2] , compute the zero-input response, Vai, the zero-state response, y and the total resp onse, yIn]