Translations:Dictionary:Fourier transform/46/en

${\tilde {f}}(\mathbf {k} )=\int _{-\infty }^{\infty }...{\mbox{n total integrations}}...\int _{-\infty }^{\infty }f(x)e^{-i\mathbf {k} \cdot \mathbf {x} }\;d\mathbf {x}$