Given the anti-causal signal x[n]= n u[n] (a) Determine its Z-transform X(z), and carefully plot the
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Given the anti-causal signal x[n]= −αn u[−n]
(a) Determine its Z-transform X(z), and carefully plot the ROC when α = 0.5 and α = 2. For which of the two values of α does X(ejω) exist?
(b) Find the signal that corresponds to the derivative dX(z)/dz. Express it in terms of α.
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a The signal xn can be written as So that its Ztransform is given by ...View the full answer
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