Consider the algebraic expression for the z z -transform of x [ n ] x [ n

Consider the algebraic expression for the $z$-transform of $x\left[n\right]$

ROC: \(|z|>\frac{1}{4}\). Find whether the system is causal and stable.

Transcribed Image Text:

x[1]= = (1+z+ 4z-) 7 (1-z-) (1-z- + 2-2) zzz-1+z-)