What is the z-transform of the signal x(n)=cos(jω0n)u(n)? – McqOptions

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1.	What is the z-transform of the signal x(n)=cos(jω0n)u(n)?
A.	\(\frac{z^{-1} sin\omega_0}{1+2z^{-1} cosω_0+z^{-2}}\)
B.	\(\frac{z^{-1} sin\omega_0}{1-2z^{-1} cosω_0-z^{-2}}\)
C.	\(\frac{1-z^{-1} cos\omega_0}{1-2z^{-1} cosω_0+z^{-2}}\)
D.	\(\frac{z^{-1} sin\omega_0}{1-2z^{-1} cosω_0+z^{-2}}\)
Answer» D. \(\frac{z^{-1} sin\omega_0}{1-2z^{-1} cosω_0+z^{-2}}\)

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