Please help me in solving the following problem:

Find the pulse transfer function and weighting sequence of the system described by the following difference equation: $$y[k+2]+ y[k+1]+(0.89)y[k]=r[k] \ ,$$ where $y[k]$ is the input and $r[k]$ is the output.


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  • $\begingroup$ This looks like a homework problem. Use the z transform. $\endgroup$ – tpb261 Feb 3 '14 at 8:03
  • $\begingroup$ So, what have you tried already and where did you get stuck? $\endgroup$ – jan Feb 3 '14 at 13:05

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