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X(z) is the z-transform of the signal x(n), then what is the z-transform of the signal nx(n)?

Posted: Thu Jul 14, 2022 9:44 am
by answerhappygod
a) \(-z\frac{dX(z)}{dz}\)
b) \(z\frac{dX(z)}{dz}\)
c) \(-z^{-1}\frac{dX(z)}{dz}\)
d) \(z^{-1}\frac{dX(z)}{dz}\)