List of top Electronics and Communication Engineering Questions on Fourier Transform asked in AP PGECET

The Fourier transform of a real valued time signal has _ _ _ _ .
In FFT computation, reducing complexity from $O(N^2)$ to $O(N \log_2 N)$ relies fundamentally on _______.
What is the Fourier Transform of a Gaussian function $e^{-t^2}$ ?
What is the primary difference between CTFT and DTFT?
Fourier transform of \( x(t) = e^{-at}u(t - 2) \) is