In a certain region, the electric potential due to a charge distribution is given by the equation V(x,y,z) = 3xy^2 + yz^2 - 2zx^2, where x, y, and z are measured in meters and V is in volts. Calculate the components (Ex, Ey, and Ez) of the electric field vector at the position (x,y,z) = (0.9, 1.2, 1.4).