A linear discrete-time system has the characteristic equation, z3 0.

1.	A linear discrete-time system has the characteristic equation, z3 0.81z = 0 The system
A.	is stable
B.	is marginally stable
C.	is unstable
D.	stability cannot be assessed from the given information.
Answer» B. is marginally stable

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A linear discrete-time system has the characteristic equation, z3 0.81z = 0 The system

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