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Let r = ri+ yj + zk and let r = ||r||. Prove that

Let r = ri+ yj + zk and let r = ||r||. Prove that

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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Please help with both a and b.

(a) Let r = ri+ yj+ zk and let r = ||r||. Prove that v() - Ff 20f Ff af (b) If V²ƒ(r,0) · Find f(r,0) such that r Or V²f(r,0) = 0
Transcribed Image Text:(a) Let r = ri+ yj+ zk and let r = ||r||. Prove that v() - Ff 20f Ff af (b) If V²ƒ(r,0) · Find f(r,0) such that r Or V²f(r,0) = 0
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