What is the z-transform of the first backward difference equation of y(n)?
(a) \(\frac{1+z^{-1}}{T}\) Y(z)
(b) \(\frac{1-z^{-1}}{T}\) Y(z)
(c) \(\frac{1+z^1}{T}\) Y(z)
(d) None of the mentioned
I got this question in an interview.
I need to ask this question from Backward Difference Method in chapter Digital Filters Design of Digital Signal Processing