If x(n)=cos 0n and W( ) is the Fourier transform of the rectangular si – McqOptions

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1.	If x(n)=cos ₀n and W( ) is the Fourier transform of the rectangular signal w(n), then what is the Fourier transform of the signal x(n).w(n)?
A.	1/2[W( - <sub>0</sub>)- W( + <sub>0</sub>)]
B.	1/2[W( - <sub>0</sub>)+ W( + <sub>0</sub>)]
C.	[W( - <sub>0</sub>)+ W( + <sub>0</sub>)]
D.	[W( - <sub>0</sub>)- W( + <sub>0</sub>)]
Answer» C. [W( - <sub>0</sub>)+ W( + <sub>0</sub>)]

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