Show that the directional derivative of f(x, y, z) = z²x + y3 at (6, 9, 8) in the direction. √5 To find the directional derivative of f, we first need the gradient of fat (6, 9, 8). This is equal to This product is jis 110 5. . Therefore, the directional derivative of f(x, y, z) = z²x + y3 in the direction of . Next, we take the ---Select--- (5) + (5) is 110√/5. of this vector and the vector (7/5)³ + (735)

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A: Application of derivative

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A: Topic = Functions

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