Prove that the directional derivative of flay.2) = aysinz. direction v=i +2j+2k 1Is Sin Z at (1,2,7)in the %3D

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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Prove that the directiongl derivative of
fla,y,z) =zysinz
direction v=°i+2j+2k IS
(1,2,5)in the
is 4
Z at
Transcribed Image Text:Prove that the directiongl derivative of fla,y,z) =zysinz direction v=°i+2j+2k IS (1,2,5)in the is 4 Z at
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