Can anyone explain me how to prove the following identity?(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\frac{\partial \hat{f}}{\partial x}(0,0) = \int \int x^2f(x,y)dxdy[/tex]

where [tex]\hat{f}[/tex] denotes the Fourier Transform of f(x,y) ?

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# Derivatives of fourier transform

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