The derivaive of f(x, y, z) at a point P is greatest in the direction given by v=-2i - 2j+2k. In this direction, the value of the derivative is 3√/3. a. Find Vflp. Vf|p= sin (a) ə sin (a) əx ə f əx 8 b. Find the directional derivative of f at P in the direction given by v = 30j +29k. D+ƒ(P) = ab f 8 a Ω a Ω

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