An electric field in some region of space is given by \vec{E}=E_{0} \frac{x}{x_{0}} \hat{\imath}+E_{0} \frac{y^{2}}{y_{0}^{2}} \hat{\jmath} where Eo, zo, and yo are constants. Taking the point (zo, yo) to be zero, determine the potential at any point (z,y).