Find the directional derivative D u f(x, y) if f(x, y) = x 3 3xy +

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Find the directional derivative Duf(x, y) if f(x, y) = x3 – 3xy + 4y2 and u is the unit vector given by angle θ = π/6. What is Duf(1, 2)?

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Calculus

ISBN: 9780495011606

6th Edition

Authors: James Stewart

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