Suppose A is a 3 x 3 orthogonal matrix with det(A) = 1. Given that the...
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Suppose A is a 3 x 3 orthogonal matrix with det(A) = 1. Given that the eigenvalues of a real matrix occur in conjugate pairs, show that A must have an eigenvalue equal to 1. Moreover, if ||u|| = 1 with Au= u, and u, v, w an orthonormal basis for R³, show that in these basis, A must be of the form: 10 0 A=0 cos 0 -sin 0 0 sin cos Suppose A is a 3 x 3 orthogonal matrix with det(A) = 1. Given that the eigenvalues of a real matrix occur in conjugate pairs, show that A must have an eigenvalue equal to 1. Moreover, if ||u|| = 1 with Au= u, and u, v, w an orthonormal basis for R³, show that in these basis, A must be of the form: 10 0 A=0 cos 0 -sin 0 0 sin cos
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Related Book For
Elementary Linear Algebra with Applications
ISBN: 978-0471669593
9th edition
Authors: Howard Anton, Chris Rorres
Posted Date:
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