Question

PLease..

Let F and G be vector fields such that (del) X F(0) = (-6.914, 5.159, 4.502), G(0) = (-8.196, -1.838, -2.2). Find the divergence of F X G at 0.

Answer 1

this is using identities involving Grad, Div and Curl
as far as i know the identity is shown as :
(del)∗(FXG)=((del)crossF)dotG)−Fdot((del)crossG)