Haw.y If the direclional derivatlve Valne (Da8)f the function f(Xxy) =x`-3xy thuy? at Paint (-200) in dirachion ef a unit vector (u= Aij)is ? and itf Value af point (3,2) in the Same direction is 261 , find the unit Vector (u) then find Value of the divectional derivative (Duf) in the direction of the unit Vector (u) at the Paint 2.

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