Calculus in 3D Section 4.2 : Line integrals of the second kind

00:00 -- Definition 03:16 -- Example: work done by a constant force 09:58 -- Showing that if the vector field is irrotational (i.e. we can write vector A = grad U) then the integral is independent of the path 12:46 -- Calculating the potential via the line integral of A. 17:32 -- Exam-type question: example of calculating the potential of an irrotational vector field