Question

Compute divergence and curl of the vector field

F = (x^2 - y^2)i + 4xyj + (x^2 - xy)k

In the point P(1,2,3)

Answer 1

Does this look right?
div F = (∂/∂x) (x^2 - y^2) + (∂/∂y) 4xy + (∂/∂z) (x^2 - xy)
= 2x + 4x - 0
= 6x.

So divergence F(1, 2, 3) = 6

Answer 2

And for curl?