Z-transform

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The Z-transform's complex variable $z$ is commonly expressed in polar form as:

z = \sigma + j\omega

z = re^{j\omega}

z =

real only

z = 1

always

The Z-transform is the discrete-time counterpart of which continuous-time transform?

A.Fourier series

B.Laplace transform

C.Hilbert transform

D.Wavelet transform

The Z-transform of the discrete unit impulse δ[n] is:

A.0

B.1

C.z

D.1/z

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