Question: A digital system is described by the following difference equation: z-1.9z+1 H(z) = z-1.8z+0.9 sketch the z-plane pole-zero and determine the stability.

A digital system is described by the following difference equation: z-1.9z+1 H(z) = z-1.8z+0.9 sketch the z-plane pole-zero and determine the stability.

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