Z-transform problem

Discussion in 'Homework Help' started by FBorges22, Apr 4, 2010.

  1. FBorges22

    Thread Starter Active Member

    Sep 11, 2008
    104
    0
    Greetings...

    Recently I tried to solve this Z-transform inverse problem...

    f(z) = \frac{(3z^3)-(32z^2)+(0.65z)}{(z-0.1)(z-0.5)(z-1)}

    But I arrived in this result:

    f(k) = 73(1/2)^k - 7(1/10)^k - 63

    The answer was supposed to be:

    f(k) = 0.1^k + 0.5^k + 1

    What went wrong? Could anyone clarify to me please?

    Thanks,
    FBorges22
     
    Last edited: Apr 4, 2010
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