Let h(x, y) be a differentiable function and let (xo, yo) be a point in the domain of h. Also, let u be a unit vector. Then D-u h(xo, yo) = -Du h(xo, yo).

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A: Here we have to find the directional derivative for given f(x, y, z).

Q: Determine if the derivative of the vector-valued function exists at the specified point. (Your…

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Q: Suppose that f(z,y) is differentiable, and suppose that the directional derivative of f at the…

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Q: Suppose we know that for a function f we have Vf(x, y) = (6x, 6). Find the directional derivative of…

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A: if r'(t) = 0 then we can say that r'(t) is perpendicular to the function r(t) for all times t.

Q: Find an expression for a unit vector normal, no, to the surface x = (4 – cos (v)) cos (u), y = (4 –…

A: The complete solutions are given below

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