# Math Help - Gradient, divergence and curl - nabla crossed with |r|r

1. ## Gradient, divergence and curl - nabla crossed with |r|r

Again, sorry for the naff title.

Find $\nabla\times(r\mathbf{r})$, where $r=|\mathbf{r}|$ and $\mathbf{r}=(x,y,z)$.

I ended up with an answer of $(0,0,0)$, which, again, I doubt is right.

2. You're right. A radial field has no curl.

3. Cheers. Yeah, like I said in my other thread, turns out I was doing all of this shizz right when I thought I was doing it wrong