Find the directional derivative of f (x, y) = 3x² – 4xy + 3y2 - 4x in the direction ofu = cos( 플)i+ sin(플)j and simplify.

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
Section4.4: Derivatives Of Exponential Functions
Problem 9E: Find derivatives of the functions defined as follows. y=3e2x2
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Find the directional derivative of f (x, y) = 3x² – 4xy³ + 3y²
- 4x in the direction of u =
cos()i+ sin()j and
simplify.
Transcribed Image Text:Find the directional derivative of f (x, y) = 3x² – 4xy³ + 3y² - 4x in the direction of u = cos()i+ sin()j and simplify.
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Directional derivative of f in the direction of u is given by

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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,