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
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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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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