# Finding Directional Derivatives

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Consider the function f(x,y,z)= e^xy cos(x+z). What is the directional derivative for f at the point P(0, -pie/6, pie/3) in the direction u parallel to i - j + 2k

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The expert determines what the directional derivatives of a point in a parallel direction.

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Consider the function f(x, y, z) = exycos(x + z). What ...

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