- #1
kryky
- 1
- 0
Hi,
I am trying to do the multipole expansion of a point charge away from the origin, I can't understand Legendre polynomials so want to do it in Cartesian but when I try to Taylor expand
the [tex]\left|\frac{1}{\vec{r}-\vec{r'}}\right|[/tex] I am not sure how to handle the modulus.
Any help appreciated.
I am trying to do the multipole expansion of a point charge away from the origin, I can't understand Legendre polynomials so want to do it in Cartesian but when I try to Taylor expand
the [tex]\left|\frac{1}{\vec{r}-\vec{r'}}\right|[/tex] I am not sure how to handle the modulus.
Any help appreciated.