- #1
go4321
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I am trying to do this integral
[tex]\int_{-\infty}^{\infty}\frac{e^{-a| \vec{r}|}e^{-\vec{b}. \vec{r}}}{|\vec{r}|}[/tex]
But if I write the modulus as
[tex]\vec{r}=\sqrt{x^{2}+y^{2}+z^{2}}[/tex]
I can't figure out how to handle the annoying square root in the exponential.
Would be grateful for hints, thanks in advance.
[tex]\int_{-\infty}^{\infty}\frac{e^{-a| \vec{r}|}e^{-\vec{b}. \vec{r}}}{|\vec{r}|}[/tex]
But if I write the modulus as
[tex]\vec{r}=\sqrt{x^{2}+y^{2}+z^{2}}[/tex]
I can't figure out how to handle the annoying square root in the exponential.
Would be grateful for hints, thanks in advance.