Compute the z-transforms of the following signals. You can use either the direct formula or the properties and tables on pp. 169-170 of Proakis and Manolakis). Remember to include the region of convergence (ROC) in each case! Also specify whether or not each system is stable (i.e., does the DTFT exist)? x[n] = [-1] -2 -13] x[n] = [(1/2)^n + (3/4)^n] u[n]

109 2 - Compute the z-transforms of the following signals. You can use either the direct formula or the properties and tables on pp. 169-170 of Proakis and Manolakis). Remember to include the region of convergence (ROC) in each case! Also specify whether or not each system is stable (i.e., does the DTFT exist)? x[n] = [-1] -2 -13] x[n] = [(1/2)^n + (3/4)^n] u[n]

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images - Compute the z-transforms of the following signals. You can use either the direct formula or the properties and tables on pp. 169-170 of Proakis and Manolakis). Remember to include the region of convergence (ROC) in each case! Also specify whether or not each system is stable (i.e., does the DTFT exist)? x[n] = [-1] -2 -13] x[n] = [(1/2)^n + (3/4)^n] u[n]

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