Let f, u and S be scalar, vector and (second-order) tensor fields respectively. Using index notation, or otherwise, prove the identity V· (fS"u) = f(V · S) · u + SVƒ · u + fS : Vu. Compute all quantities appearing in the above identity to verify its validity when f(x) = x1*2, u(x) = S(x) 0 0 = I2
Let f, u and S be scalar, vector and (second-order) tensor fields respectively. Using index notation, or otherwise, prove the identity V· (fS"u) = f(V · S) · u + SVƒ · u + fS : Vu. Compute all quantities appearing in the above identity to verify its validity when f(x) = x1*2, u(x) = S(x) 0 0 = I2
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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![Let f, u and S be scalar, vector and (second-order) tensor fields respectively.
Using index notation, or otherwise, prove the identity
V· (fS"u) = f(V · S) · u + SVƒ · u + fS : Vu.
Compute all quantities appearing in the above identity to verify its validity when
f(x) = x1*2, u(x) =
S(x)
0 0
=
I2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fad4d02b6-78f1-4c0a-a713-3b04a8400050%2Fedebdc50-28bc-498b-8e7c-a6574cc2c398%2Fxf88fm_processed.png&w=3840&q=75)
Transcribed Image Text:Let f, u and S be scalar, vector and (second-order) tensor fields respectively.
Using index notation, or otherwise, prove the identity
V· (fS"u) = f(V · S) · u + SVƒ · u + fS : Vu.
Compute all quantities appearing in the above identity to verify its validity when
f(x) = x1*2, u(x) =
S(x)
0 0
=
I2
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