1.

Unit step response of the system described by the equation y(n) + y(n - 1) - x(n) is

A. \(\frac{{{Z^2}}}{{(Z + 1)(Z - 1)}}\)
B. \(\frac{{{Z}}}{{(Z + 1)(Z - 1)}}\)
C. \(\frac{{{Z+1}}}{{Z - 1}}\)
D. \(\frac{{Z{(Z-1)}}}{{Z + 1}}\)
Answer» B. \(\frac{{{Z}}}{{(Z + 1)(Z - 1)}}\)


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