If F(ω) is Fourier transform of f(t), then Fourier transform of f(t) – McqOptions

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1.	If F(ω) is Fourier transform of f(t), then Fourier transform of f(t) cos2 ωct is
A.	F(ω) + [F(ω + 2ωc) + F(ω - 2ωc)]
B.	F(ω) + [F(ω + 2ωc) + F(ω - 2ωc)]
C.	F(ω) - [F(ω + 2ωc) + F(ω - 2ωc)]
D.	F(ω) - [F(ω + 2ωc) + F(ω - 2ωc)]
Answer» B. F(ω) + [F(ω + 2ωc) + F(ω - 2ωc)]

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