Over a certain region of space, the electric potential is V = 5x - 6x2y + 2yz2. Find the expression for the x component of the electric field over this region. (Use x, y, and z as necessary.)

Find the expression for the y component of the electric field over this region.

Find the expression for the z component of the electric field over this region.

What is the magnitude of the field at the point P, which has coordinates (5, 0, -7) m?