Let \(x\left[ n \right]={\left( { - \frac{1}{9}} \right)^n}u\left[ n \ – McqOptions

MCQOPTIONS

1.	Let \(x\left[ n \right]={\left( { - \frac{1}{9}} \right)^n}u\left[ n \right] - {\left( { - \frac{1}{3}} \right)^n}u\left[ { - n - 1} \right]\). The Region of convergence (ROC) of the z-transform
A.	is \(\left\| z \right\| > \frac{1}{9}\)
B.	is \(\left\| z \right\| < \frac{1}{3}\)
C.	is \(\frac{1}{3} > \left\| z \right\| > \frac{1}{9}\)
D.	does not exist
Answer» D. does not exist

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