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    stability of control system

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    1. A system has the transfer function:
    H(z) = (z2-3z+1)/(z3+ z2-0.5z+0.5)

    Is the system stable, marginally stable, or unstable?

    2. A discrete-time system is give by the input/output difference equation:

    y[n+2]-y[n+1]+y[n]=x[n+2]-x[n+1]

    Is the system stable, marginally stable, or unstable?

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    https://brainmass.com/engineering/electrical-engineering/stability-of-control-system-201956

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    The solution explains how to determine the stability of control system.

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