engineering recuitment GATE IN Test Series 2023-24 Mock Test Signals and Systems Fourier Transform Fourier Transform of Standard Signals
The inverse Fourier transform of a function given \(G\left( \omega \right) = \frac{{{\omega ^2} + 21}}{{{\omega ^2} + 9}}\) is
1
δ(t) + 2 exp (-3|t|)
2
cos 3 ωt + 21 exp (-3t)
3
sin 3 ωt + 7 cos ωt
4
sin 3 ωt + 21 exp (3t)