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Signal and systems miscellaneous
  1. The inverse Fourier transform of the function
    F(ω) =
    1
    		+ πδ(ω) is—
    jω
    1. sin ωt
    2. cos ωt
    3. sgn (t)
    4. u(t)
Correct Option: D

Since, Fourier transform of unit step function is

1
+ πs(ω) so, inverse Fourier transform will be u(t).
jω

Hence, alternative (D) is the correct choice.


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