1. Triangle inequality for inner products: For all a, b, c € V, (a, c) ≤ (a, b) + (b, c). = 0 and (b, c) =0 then (a, c) = 0. : 2. Transitivity of orthogonality: For all a, b, c € V, if (a, b) 3. Orthogonality closed under addition: Suppose S = {V₁,..., Vn} CV is a set of vectors, and x is orthogonal to all of them (that is, for all i = 1,2,...n, (x, vi) = 0). Then x is orthogonal to any y € Span(S).
1. Triangle inequality for inner products: For all a, b, c € V, (a, c) ≤ (a, b) + (b, c). = 0 and (b, c) =0 then (a, c) = 0. : 2. Transitivity of orthogonality: For all a, b, c € V, if (a, b) 3. Orthogonality closed under addition: Suppose S = {V₁,..., Vn} CV is a set of vectors, and x is orthogonal to all of them (that is, for all i = 1,2,...n, (x, vi) = 0). Then x is orthogonal to any y € Span(S).
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.3: Spanning Sets And Linear Independence
Problem 21EQ
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Here are a collection of conjectures. Which are true, and which are false?
• If it is true, provide a formal proof demonstrating so.
• If it is false, give a counterexample, clearly stating why your counterexamples satisfifies the premise
but not the conclusion.
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