fourier transform - SERP Analysis

https://en.wikipedia.org/wiki/Fourier_transform

https://www.reddit.com/r/mathematics/comments/dshdve/what_does_essentially_fourier_transform_do/

https://mathworld.wolfram.com/FourierTransform.html

https://www.keysight.com/used/mc/en/knowledge/formulas/fourier-transform

https://www.sciencedirect.com/topics/engineering/fourier-transform

https://betterexplained.com/articles/an-interactive-guide-to-the-fourier-transform/

https://www.youtube.com/watch%3Fv%3DspUNpyF58BY

https://www.quantamagazine.org/what-is-the-fourier-transform-20250903/

https://www.geeksforgeeks.org/maths/fourier-transform/

https://www.wikihow.com/Calculate-the-Fourier-Transform-of-a-Function