why do I suddenly get a gain value in my transfer function?

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Matt Mad
Matt Mad on 1 Dec 2021
Commented: Matt Mad on 1 Dec 2021
this is my transfer function:
when I tried to obtained the zeros and poles value by using zpk function suddenly I got a gain value.
any advice will be much appreciated. thank you in advance

Accepted Answer

Jon on 1 Dec 2021
Your original expression and the one found by zpk are the same. zpk just factored out the 2 from denominator.

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