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I have a little problem. I have to solve this task but I can't.

Z-transform of sequence $\{x(k)\}$ describe by the formula:

$$X(z) = \frac{2.5 -3.15z^{-1} + 1.2 z^{-2}}{1-2.3z^{-1} + 1.2z^{-2}}$$

Calculate of samples $x(-2), x(-1), x(0), x(1)$ and $x(2)$ double-sides sequence, which correspond this Z-transform.

Thank you very much.

I have a little problem. I have to solve this task but I can't.

Z-transform of sequence $\{x(k)\}$ describe by the formula:

$$X(z) = \frac{2.5 -3.15z^{-1} + 1.2 z^{-2}}{1-2.3z^{-1} + 1.2z^{-2}}$$

Calculate of samples $x(-2), x(-1), x(0), x(1)$ and $x(2)$ double-sides sequence, which correspond this Z-transform.

Thank you very much.

"Double-side" sequence I mean sequence like this:

And I'm trying to solve this task with MatLab, I've used function "iztrans()" (inverse z-transformation) and I've gotten this results (below MatLab code and results):

But sequence which I've gotten isn't correct. Could you say what is my mistake?

I have a little problem. I have to solve this task but I can't. "Z-transform of sequence {x(k)} describe by the formula:

Calculate of samples x(-2), x(-1), x(0), x(1) and x(2) double-sides sequence, which correspond this Z-transform."

Thank you very much.

I have a little problem. I have to solve this task but I can't.

Z-transform of sequence $\{x(k)\}$ describe by the formula:

$$X(z) = \frac{2.5 -3.15z^{-1} + 1.2 z^{-2}}{1-2.3z^{-1} + 1.2z^{-2}}$$

Calculate of samples $x(-2), x(-1), x(0), x(1)$ and $x(2)$ double-sides sequence, which correspond this Z-transform.

Thank you very much.