Question

What is the magnitude of the electric field, e, in v/m at the point (A.6 m, -A.6 m) in the x-y plane for a the potential function v(x, y) = (x²y - y²x -10) v.
A) C.289 v/m
B) 4.561 v/m
C) 5.723 v/m
D) 6.895 v/m