(a) Find the gradient off.
(b) Evaluate the gradient at the point P.
© Find the rate of change off at P in the direction of the vector u.
f(x , y) = x/ y,
P(2 , 1),
u = 3/5 i + 4/5 j.
(a) Find the gradient off.
(b) Evaluate the gradient at the point P.
© Find the rate of change off at P in the direction of the vector u.
f(x , y) = x/ y,
P(2 , 1),
u = 3/5 i + 4/5 j.