edited by
0 votes
0 votes

The $z-$transform of $x[n]=\alpha ^{|n|}, 0<|\alpha|<1,$ is $X(z).$ The region of convergence of $X(z)$ is

  1. $|\alpha|<|z|<\frac{1}{|\alpha|}$
  2. $|z|>\alpha$
  3. $|z|>\frac{1}{|\alpha|}$
  4. $|z|<min[|\alpha|,\frac{1}{|\alpha|}]$
edited by

Please log in or register to answer this question.

Answer: