Question: Find the directional derivative of the function at the given point in the given direction. Find the maximum value of this derivative at that point.

Find the directional derivative of the function at the given point in the given direction. Find the maximum value of this derivative at that point. (a) f(:2:,y, z) = V332 + y? + 2'2 at (3,6,2) in the direction of the vector 7 = (b) f(:c,y, z) 2 g at (4,1,1) in the direction of the vector W = (c) f(a:,y, z) 2 y + y2z at (1,2,3) in the direction of the vector 7 =

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