Determine if the given vector field F is conservative or not:
F = (-8y, 12y^2 - 8z^2 - 8x - 8z, -16yz - 8y)
conservative
not conservative
If F is conservative, find all potential functions f for F so that F = ∇f. (If F is not conservative, enter NOT CONSERVATIVE. Use C as an arbitrary constant.)
f(x, y, z) =