f(x, y) =x/y , P(8, 1), u = 3/5i +4/5 j (a) Find the

Last updated: 7/16/2022

f(x, y) =x/y , P(8, 1), u = 3/5i +4/5 j (a) Find the gradient of f. Vf(x, y) = (b) Evaluate the gradient at the point P. Vf(8, 1) = (c) Find the rate of change of f at P in the direction of the vector u. Duf(8, 1) =