Suppose that, as a function of x, y, and z, an electric field has the following components:
Ex = 6x2y, Ey = 2x3 + 2y and Ez = 0
where E is measured in V/m and the distances are measured in m.

1) Find the electrical potential difference between the origin and the point x = -2.7 m, y = 4.1 m, z = 0.0 m.
2) Find the potential difference between the origin and the point x = 4.2 m, y = 5.9 m, z = 0.0 m.