Some times it is easier to compute the z-transform of a function by considering differentiation with respect to a second variable.
Consider the following two cases:
a. Is it possible to find the z-transform in (9.6.17a) from (9.6.17b) byassuming Ω0 is a continuous variable and by noting that that sine and cosine functions are related through a derivative? If so, derive the corresponding expression. If not, explain.
b. Derive the z-transform of the function x[n] nanu [n] using the result in (9.6.15a) and then using a as the second variable.