1. The problem statement, all variables and given/known data Three vector fields are listed below. Determine whether each of them is electrostatic field or magnetic field. 2. Relevant equations F1(x, y, z) = A (9yz ex + xz ey + xy ez) F2(r,∅,z) = A [(cosx/r)er + (sinx/r) e∅] F3(r,θ,∅) = Ar2 e(-r/a) er 3. The attempt at a solution Used matrix to determine the first one | ex ey ez | |δ/δx δ/δy δ/δz| |yz xz xy | as electrostatic (curl = 0 = -δB/δt) & fine with the how & what defines an electrostatic field but . . . . not sure how to determine whether one of these fields is magnetic or not! Help please. Thank you.