- #1
matematikuvol
- 192
- 0
I see identity in one mathematical book
[tex]div \vec{A}(r)=\frac{\partial \vec{A}}{\partial r} \cdot grad r[/tex]
How? From which equation?
[tex]div \vec{A}(r)=\frac{\partial \vec{A}}{\partial r} \cdot grad r[/tex]
How? From which equation?