Equations and are approximations of the magnitude of the electric field of an electric dipole, at points along the dipole axis. Consider a point P on that axis at distance z = 5.00d from the dipole center (d is the separation distance between the particles of the dipole). Let Eappr be the magnitude of the field at point P as approximated by Eqs.22-8 and 22-9. Let Eact be the actual magnitude. What is the ratio Eappr /Eact?