The Region of Convergence
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Question 1 of 4
1. Question
The infinite series defining the z-transform converges for all possible values of
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Question 2 of 4
2. Question
The z-transforms of two different time signals
![x[n]](https://allsignalprocessing.com/wp-content/plugins/latex/cache/tex_d3baaa3204e2a03ef9528a7d631a4806.gif)
and ![y[n]](https://allsignalprocessing.com/wp-content/plugins/latex/cache/tex_a39037ba03412351ec1f3c8ca9e807fd.gif)
can satisfy 
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Question 3 of 4
3. Question
It is possible to have a signal for which the z-transform does not exist for any values of
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Question 4 of 4
4. Question
Identify all of the following that describe valid shapes for the region of convergence in the z-plane.
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