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  1. The Causal system given below is __________
    H(z) = 6 + z-1 - z-2

    2. A.
    maximum phase
    B.
    minimum phase
    C.
    mixed phase
    D.
    none of these

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    Answer : Option B

    Explanation :

    Minimum phase

    H(z) = 6 + z-1 - z-1

    6z2 + z - 1 = 0

    ∴ We have zeros at z = 1/3 and z = - 1/2

    ∴ All the zeroes lies inside the unit circle, it is a min. phase system.

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