Onsider the surface f (x comma y )equals4 minus x squared minus 2 y squared (a paraboloid) and the point P(1 comma 1 comma 1 )on the surface. a. Find the gradient of f. b. Let Upper C prime be the path of steepest descent on the surface beginning at P, and let C be the projection of Upper C prime on the xy-plane. Find an equation of C in the xy-plane. c. Find parametric equations for the path Upper C prime on the surface. a. What is the gradient? gradient f(x, y)equalsleft angle nothing comma nothing right angle