(1 point) Consider the function f (at, y) : .'L'2 + 2992. Find the directional derivative of f at the point (3, 2) in the direction given by the angle q : g . (Here (35 is the polar angle -- the angle which the direction makes with the positive direction of the m-axis.) Find the unit vector in the direction in which f is increasing most rapidly at (3, 2). ( , )