12. Let f(x, y, z) = xy – 2³. Calculate the directional derivative of f at the point (3, -2, –1) in the direction pointing to the origin.

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.2: Introduction To Conics: parabolas
Problem 4ECP: Find an equation of the tangent line to the parabola y=3x2 at the point 1,3.
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12. Let f(x, y, z) = xy – z³. Calculate the directional derivative of f at the point
(3, –2, –1) in the direction pointing to the origin.
Transcribed Image Text:12. Let f(x, y, z) = xy – z³. Calculate the directional derivative of f at the point (3, –2, –1) in the direction pointing to the origin.
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