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Find the directions in which the directional derivative of f(x,y) = x^2 + xy^3 at the point (2,1) has the value 2.

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter4: Calculating The Derivative

Section4.1: Techniques For Finding Derivatives

Problem 25E: Explain the relationship between the slope and the derivative of fx at x=a.

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Find the directions in which the directional derivative of f(x,y) = x^2 + xy^3 at the point (2,1) has the value 2.

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