Homework Statement
If \phi= xy^{2}
A=xzi-z^{2}j+xy^{2}k
B=zi+xj+yk
Verify that
\nabla.(\phiA)=A.\nabla\phi+\phi.\nablaA
Homework Equations
The Attempt at a Solution
I have worked out the first two parts of the question:
\phiA = (x^{2}y^{2}z, -xy^{2}z^{2},x^{2}y^{4})
div(\phiA) =...