Question: Let f(x, y) = 3x + 4y + 7. Find the directional derivative of f at point P = (0, x/2) in the direction u

Iy-J 3y over the triangular region R whose mum; 312 [I], 0),

Let f(x, y) = 3x + 4y + 7. Find the directional derivative of f at point P = (0, x/2) in the direction u =Find the absolute maximum and minimum of t, y) : Iy-J 3y over the triangular region R whose mum; 312 [I], 0), (0, A), (5. 0)

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