Inverse fourier transform of magnitude and phase

1. How do you find the inverse of a Fourier transform?
2. What is magnitude of Fourier transform?
3. What is the difference between FFT and Ifft?

How do you find the inverse of a Fourier transform?

The inverse Fourier transform is defined by(12.4)ℱ−1[g](x)=1(2π)n· ∫ℝnf(ξ)eiξxdξ.

What is magnitude of Fourier transform?

For each frequency, the magnitude (absolute value) of the complex value represents the amplitude of a constituent complex sinusoid with that frequency, and the argument of the complex value represents that complex sinusoid's phase offset. If a frequency is not present, the transform has a value of 0 for that frequency.

What is the difference between FFT and Ifft?

FFT (Fast Fourier Transform) is able to convert a signal from the time domain to the frequency domain. IFFT (Inverse FFT) converts a signal from the frequency domain to the time domain.