If x(n)=cosω0n and W(ω) is the Fourier transform of the rectangular signal w(n), then what is the Fourier transform of the signal x(n).w(n)? - Study24x7
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Ashish Verma
17 May 2019 03:09 PM study24x7 study24x7

 If x(n)=cosω0n and W(ω) 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(ω-ω0)- W(ω+ω0)].

B

 1/2[W(ω-ω0)+ W(ω+ω0)].

C

 [W(ω-ω0)+ W(ω+ω0)].

D

[W(ω-ω0)- W(ω+ω0)].

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