Question: Compute the gradient of the following functions, evaluate it at the given point, and evaluate the directional derivative at that point in the given direction.

Compute the gradient of the following functions, evaluate it at the given point, and evaluate the directional derivative at that point in the given direction. f(x, y, z) = xy + yz + xz + 4; (2,2,

f(x, y, z) = xy + yz + xz + 4; (2,2, 1); u = ( 0, = (0- VZ V2/

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