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a The number of directions (unit vectors) in which the directional derivatives of f(x v) = xe-xy at the point (2, 1) has the value -2 is e This is obtained by letting = (u1, u2) to be the required unit vector and solving the system of equations: Au1 +Bu2 = C Du,2 + Eu,? = F

a The number of directions (unit vectors) in which the directional derivatives of f(x v) = xe-xy at the point (2, 1) has the value -2 is e This is obtained by letting = (u1, u2) to be the required unit vector and solving the system of equations: Au1 +Bu2 = C Du,2 + Eu,? = F

Advanced Engineering Mathematics
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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number of unit vectors of a specified value of a directional derivative. What are the system of equations to solve for this?

The number of directions (unit vectors) in which the directional derivatives of f(x v) = xe-xy at the point (2, 1) has the value -2 is This is obtained by letting = (u1, u2) to be the required unit vector and solving the system of equations: Au1 +Bu2 = C Du,? + Euz? = F
Transcribed Image Text:The number of directions (unit vectors) in which the directional derivatives of f(x v) = xe-xy at the point (2, 1) has the value -2 is This is obtained by letting = (u1, u2) to be the required unit vector and solving the system of equations: Au1 +Bu2 = C Du,? + Euz? = F
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