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How can I use double-sided z transform?

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Justin Fan
Justin Fan on 6 Jun 2020
Answered: Asvin Kumar on 8 Jun 2020
Can I use z transform to evaluate a function from negative infinity to positive infinity instead of from 0 to positive infinfity?
the z transform introduced by my textbook(Oppenheim Signals and Systems 2e) evaluate a function from negative infinity to positive infinity.

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Answers (1)

Asvin Kumar
Asvin Kumar on 8 Jun 2020
Currently the ztrans function does not support bilateral transforms. This is a known limitation and our developers are looking into it.
On the other hand, it should be possible to implement similar functionality using the symsum function from the Symbolic Math Toolbox.

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