1) $ x(z)=\frac{1}{1-15 z-1+0.5 z^{-2}} $

2) $ x(z)=\frac{1}{\left(1+z^{-1}\right)\left(1-z^{-1}\right)^{2}} $

Subject : Signals and Systems

Topic : Frequency Domain Analysis of Discrete Time System using Z Transform

Difficulty : Easy