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Q. |
Unit step response of the system described by the equation y(n) +y(n-1) =x(n) is: |
A. | z2/(z+1)(z-1) |
B. | z/(z+1)(z-1) |
C. | z+1/z-1 |
D. | z(z-1)/z+1 |
Answer» A. z2/(z+1)(z-1) |
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