Recent content by rsammas

that's still not what I'm asking. but maybe showing a proof might help me out a bit

that's what I was thinking, but the assignment is what I wrote above

Homework Statement Show that: ∇x(∇xB) = (B∇)B - ∇ (1/2B2) Homework Equations r = (x,y,z) = xiei ∂xi/∂xj = δij r2 = xkxk δij = 1 if i=j, 0 otherwise (kronecker delta) εijk is the alternating stress tensor and summn convn is assumed. The Attempt at a Solution On the...