- #1

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## Homework Statement

This isn't my homework question exactly, but it will help me to do the question. We have an integral that is of the form:

[tex]\int[/tex][tex]\int[/tex][tex]\int[/tex] f([tex]\vec{r}[/tex])g([tex]\vec{r}[/tex]) [tex]\vec{r}[/tex] d[tex]^{3}[/tex][tex]\vec{r}[/tex]

## Homework Equations

N/A

## The Attempt at a Solution

I don't know what this d[tex]^{3}[/tex][tex]\vec{r}[/tex] is. I'm normally faced with dV or dr or dx or something of this form.

I know that r = sqrt (x^2 + y^2 + z^2)

[tex]\vec{r}[/tex] = xi + yj + zk

and how to represent x, y and z in terms of r, theta and phi but I don't know where to go form here.