(1 point) (a) Find the point that is a distance 0.1 from the point P=(7,2) in the direction of =⟨3,−3⟩. Give five decimal places in your answer. = ( 6.91056 , 1.7 ) (b) Use P and to approximate the directional derivative of (x, y)=x+2y‾‾‾‾‾‾√ at P, in the direction of . ≈ (c) Give the exact value for the directional derivative you estimated in part (b). = 0