Write a MATLAB programs for the following projects. Include a copy of your programs in your report along with the requested results (numbers, figures, etc.).

A causal LTI system is described by

(a) Use MATLAB to determine a cascade form containing second order sections and compute the response of the system to the following input:

X(n) = u(n), 0 ? n ? 20

(b) Use filter function and a direct form to compute the response of the system to the above input.

y(n) = y(n -m) 3 ?0 m=1 y(n) = y(n -m) 3 ?0 m=1