Plzz solve ...Thank u

A vector field is given in cartesian coordinates as: E(x, y, z) = -9 x/(1 + y?) ax + (-7 + y + z) ay + (2x - z2) az For 2 points find a unit vector in the direction of E(x, y, z) at point M(1, 2, -3) For 4 points find the angle between vector E(x, y, z) at point M(1, 2, -3) and vector E(x, y. z) at point N(2, 0, 4) For 4 points find the flux integral at the plane z = 1 of the vector field E(x, y, z) and the surface element dSz with 0