Hi all, Is curl(BF)=Bcurl(F)-Fxgrad(B) if B and F are partially differentiable functions of x, y, and z. Basically I would solve for the LHS and then the RHS. If I get similar answers then I have proven it, else it is not proven. However, I am stuck with the LHS. How can I perform curl(BF)? Do I: curl(BF)=[d/dx,d/dy,d/dz]x[x^2,y^2,z^2]?