Section 11.6: Problem 4 (1 point) Find the directional derivative of at, 3;, z) = 49:2 y2 222 at the point P = (1,1, 2) in the direction of the origin. U Section 11.6: Problem 5 (1 point) Find the maximum rate of change of m, y, z) = a: + g at the point (1, 4, 2) and the direction in which it occurs. Maximum rate of change: D Direction in which it occurs: C]