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## Homework Statement

Write the del operator in spherical coordinates?

## Homework Equations

I wrote the spherical unit vectors:

[tex]\hat{r}[/tex]=sin[tex]\theta[/tex].cos[tex]\phi[/tex].[tex]\hat{x}[/tex]+sin[tex]\theta[/tex].sin[tex]\phi[/tex].[tex]\hat{y}[/tex]+cos[tex]\theta[/tex].[tex]\hat{z}[/tex]

[tex]\hat{\phi}[/tex]=-sin[tex]\phi[/tex].[tex]\hat{x}[/tex]+cos[tex]\phi[/tex].[tex]\hat{y}[/tex]

[tex]\hat{\theta}[/tex]=cos[tex]\phi[/tex].cos[tex]\theta[/tex].[tex]\hat{x}[/tex]+sin[tex]\phi[/tex]+cos[tex]\theta[/tex].[tex]\hat{y}[/tex]-sin[tex]\theta[/tex].[tex]\hat{z}[/tex]

## The Attempt at a Solution

I have no idea where to start... Please help, I'm going crazy with this...