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Which of the following values is the directional derivative of f (x, y) = ln (x² + y² + z²) at the point (1, 3, 2) in the direction of (1,-1,-1)? None of the given choices ○ 4√3 7 0-743 7√3 O-4√3 0-4/14

Which of the following values is the directional derivative of f (x, y) = ln (x² + y² + z²) at the point (1, 3, 2) in the direction of (1,-1,-1)? None of the given choices ○ 4√3 7 0-743 7√3 O-4√3 0-4/14

Calculus For The Life Sciences
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.
Chapter3: The Derivative
Section3.CR: Chapter 3 Review
Problem 59CR
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Which of the following values is the directional derivative of ƒ (x, y) = ln(x² + y² + z²) at the point (1, 3, 2) in the direction of (1,-1,-1)? None of the given choices 4√3 7 4 7√3 -4√3 0-4 - 1/1/1
Transcribed Image Text:Which of the following values is the directional derivative of ƒ (x, y) = ln(x² + y² + z²) at the point (1, 3, 2) in the direction of (1,-1,-1)? None of the given choices 4√3 7 4 7√3 -4√3 0-4 - 1/1/1
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