# 3D fourier transfrom

I need to take the 3-Dimensional Fourier transform of a point charge potential. I have an integral of this form, but I am unsure as to how to approach this integral.

$$\int e^{-i\vec{x}\vec{k}} \frac{q}{|\vec{x}-\vec{x'}|}d^3x$$

A push in the right direction would be appreciated.

Meir Achuz
Homework Helper
Gold Member
Introduce the variable $${\vec r}={\vec x}-{\vec x}'$$.

mathman
Change from Cartesian to spherical coordinates.

Meir Achuz
Homework Helper
Gold Member
It was not in Cartesian coordinates.

mathman
It was not in Cartesian coordinates.

What do you mean by d3x?

Meir Achuz