Og (15p) Find at (u, u) (0.1) if g(x,y)-rr_ Ñг, x-c" cos u and y direction from P to Q(3, 1). f(x, y) # ry2 subject to the constraint x2 + y-1. eu sinu. l· 2. (20p) If f(x,y) = xe". find the directional derivative of f at the point P(2.0) in the 3. (20p) Use Lagrange multipliers to find the minimum and maximum values of the function u
