I'm struggling trying to follow an example, it has the following set of equations:
W\(_{2}\)(z) = \(\alpha\)(W\(_{4}\) - X(z))
W\(_{4}\)(z) = Z\(^{-1}\)(W\(_{2}\)(z) + X(z)
and converts them into this:
W\(_{2}\)(z) = \(\frac{\alpha (Z^{-1}-1)}{1-\alpha Z^{-1}}X(z)\)
W\(_{4}\)(z) = \(\frac{Z^{-1}(1-\alpha)}{1-\alpha Z^{-1}}X(z)\)
I must have missed something, because I can't figure out how to make that transition. Anyone who would be able to explain? Just one of them should do the trick.
W\(_{2}\)(z) = \(\alpha\)(W\(_{4}\) - X(z))
W\(_{4}\)(z) = Z\(^{-1}\)(W\(_{2}\)(z) + X(z)
and converts them into this:
W\(_{2}\)(z) = \(\frac{\alpha (Z^{-1}-1)}{1-\alpha Z^{-1}}X(z)\)
W\(_{4}\)(z) = \(\frac{Z^{-1}(1-\alpha)}{1-\alpha Z^{-1}}X(z)\)
I must have missed something, because I can't figure out how to make that transition. Anyone who would be able to explain? Just one of them should do the trick.