Calculate the divergence of F=r∥r∥3\mathbf{F} = \frac{\mathbf{r}}{\|\mathbf{r}\|^3}F=∥r∥3r in R3∖{0}\mathbb{R}^3 \setminus \{\mathbf{0}\}R3∖{0} where r=⟨x,y,z⟩\mathbf{r} = \langle x, y, z \rangler=⟨x,y,z⟩.
0
1∥r∥3\frac{1}{\|\mathbf{r}\|^3}∥r∥31
3∥r∥3\frac{3}{\|\mathbf{r}\|^3}∥r∥33
Undefined