8. Let x and y be vectors in 3-space, and suppose u is orthogonal to both x and y. Prove that u is also orthogonal to k₁x + k₂y, for every pair of scalars k₁ and k₂.
8. Let x and y be vectors in 3-space, and suppose u is orthogonal to both x and y. Prove that u is also orthogonal to k₁x + k₂y, for every pair of scalars k₁ and k₂.
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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Question 8. Please write down the question for me too on paper so I can keep it as my notes. Thanks a lot
Transcribed Image Text:8. Let x and y be vectors in 3-space, and suppose u is orthogonal to both x and y. Prove that u is also orthogonal
to k₁x + k₂y, for every pair of scalars k₁ and k₂.
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