Find the directional derivative of the function at the given point in the direction of the vector v. f(x, y, z) = xe + ye? + ze, (0, 0, 0), Duf(0, 0, 0) = v = (6, 1, -1)

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Q: (1,1),(2,2),(3,3)(4,4),(5,5) relation or function?

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