Sketch the pole-zero plot for each of the following z-transforms and shade the region of convergence: 1-

Sketch the pole-zero plot for each of the following z-transforms and shade the region of convergence:

Transcribed Image Text:

1- ROC: [z < 2 (a) X1(z): 1+ 2z-1 1- (b) X2(z) = x2[n] causal (1 + }2-)(1 – }-1)" 1+z- 2z-2 1- +z2 (c) X3(z) = x3[n] absolutely summable. %3D