Inverse z transform

Discussion in 'Homework Help' started by xxxyyyba, Apr 23, 2015.

  1. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
    2
    Hi!
    How can I find inverse z transform of X(z)=\frac{5}{(z-2)^{2}} ? It is known that x[n] is causal.
     
  2. WBahn

    Moderator

    Mar 31, 2012
    17,768
    4,801
    You need to show YOUR best attempt to solve YOUR homework problem.

    You might consider what property of the Z-transform 1/(z^2) represents and what property of the Z-transform (z-2) represents.
     
  3. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
    2
    I know that inverse z transform of 1/(z^k) is delta(n-k).
    Ok, here is what I have done:

    rjesenje.jpg

    I stuck there.
     
    Last edited: Apr 24, 2015
  4. MrAl

    Well-Known Member

    Jun 17, 2014
    2,439
    492
    Hi,

    Here is a cleaned up image. It's a bit easier to read and takes less bytes.
     
  5. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
    2
    Here is Latex version:

    [​IMG]

    [​IMG]
     
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