Elementary Linear Algebra (MindTap Course List)
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN: 9781305658004
Author: Ron Larson
Publisher: Cengage Learning
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Problem 14 (Orthogonal Matrices). Prove each of the following.
1. P is orthogonal
PT is orthogonal.
2. If P is orthogonal, then P-1 is orthogonal.
3. If P, Q are orthogonal, then PQ is orthogonal.
Problem 15 (Orthogonal Complement). Consider P2 with the inner product,
(f,g) =
f(x)g(x)dx.
Put W = span(2x+1). Find a basis of W.
(1)
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Transcribed Image Text:Problem 14 (Orthogonal Matrices). Prove each of the following. 1. P is orthogonal PT is orthogonal. 2. If P is orthogonal, then P-1 is orthogonal. 3. If P, Q are orthogonal, then PQ is orthogonal. Problem 15 (Orthogonal Complement). Consider P2 with the inner product, (f,g) = f(x)g(x)dx. Put W = span(2x+1). Find a basis of W. (1)
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