2. An invertible n x n matrix A is called orthogonal if AT = A-1. (a) If A is orthogonal, what are the only possible values for det A? (b) For each value given in part a, give an example of an orthogonal 2 x 2 matrix with that determinant. Show that your examples are orthogonal.
2. An invertible n x n matrix A is called orthogonal if AT = A-1. (a) If A is orthogonal, what are the only possible values for det A? (b) For each value given in part a, give an example of an orthogonal 2 x 2 matrix with that determinant. Show that your examples are orthogonal.
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter2: Matrices
Section2.1: Operations With Matrices
Problem 77E
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