Question 3 (4 points) Listen Find the directional derivative of, the function at the point P(2, 1) in the following direction: f(x, y) = 3x2y -2xy2 + 3 - 9 in the direction v = 3i - 5j O Daf(2, 1) = -1 O Daf(2, 1) = -5 O Daf (2, 1) = - V13 13 O D- f(2, 1) = - 5V34direction: Find the directional derivative of the function at the point P(2, 1) in the following f(x, y) = 3x2y -2ry2 + y3 - 9 in the direction v = 3i - 5j O Daf( 2, 1) = -1 O Daf( 2, 1) =-5 O Daf ( 2, 1) = - V13 13 O 5134 Daf(2, 1) = - 34