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Help me find the inverse Z transform. Thanks

  1. Jan 15, 2015 #1
    Hi guys! I am having a problem in finding the inverse z transform of the given signal. Can anyone help me? I'd appreciate it. Thanks!

    Here is basically what I did:

    However, I don't know what to do next. What is the next thing to do? Thanks!
  2. jcsd
  3. Jan 15, 2015 #2

    rude man

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    Been a while for me, but might look at:
    starting with the original F(z), consider
    z → z /3
    Then look at the z transform for f[n] = [n2]
    and finally realize z-1F(z) ↔ f[n-1]u[n-1].
    Last edited: Jan 15, 2015
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