Heya! Was just wondering how to do this question:
Got a little stuck and any help would be great :)
Tried looking around for some resources online, but couldn't find any, so here I go. . .
Given that u = (x^2 y, y^2 z , z^2 x), calculate
(a) ∇(∇ · u)
(b) ∇ × (∇ × u)
(c) ∇^2 u