The ROC of the above question is given by—

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The ROC of the above question is given by—

1. 1 < |z| < 2
  2
2. 1 < |z|
  2
3. |z| > 2
4. None of these

Correct Option: A

ROC for x₁ (z): |z| < 2

ROC for x₂(z): \|z\| >	1
	2

ROC for x₃(z): \|z\| >	1
	3

Hence, ROC for x(z):	1	< \|z\| < 2
	2

Hence, alternative (A) is the correct choice.