1. The problem statement, all variables and given/known data
The conjugation property is expressed as .
This property follows in a straightforward maner from the definition of the -transform, the details of which are left as an exercise.
2. Relevant equations
3. The attempt at a solution
Given a complex sequence, its z-transform is
Hence, the z-transform of a conjugated sequence
Now, how come I didn't get the , as in ?
PS. I apologize beforehand for copying verbatim from physicsforums.