Communication Systems - Engineering

Q1:

If F(ω) is Fourier transform of f(t), then the Fourier transform of f(t) cos ωct is

A F(ω + ωc) + F(ω - ωc)

B
[F(ω + ωc) + F(ω - ωc)]

C F(ω + ωc) - F(ω - ωc)

D
[F(ω + ωc) - F(ω - ωc)]

ANS:B -

[F(ω + ωc) + F(ω - ωc)]

No answer description is available.