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Unformatted text preview: the inverse of an orthogonal matrix is an orthogonal matrix, a product of any number of orthogonal matrices and their inverses is an orthogonal matrix. Answer: matrices AB, AB1 and A T B are necessarily orthogonal, matrix A + B does not have to be orthogonal and matrix 2 A is never orthogonal. 1...
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 Fall '08
 Conger
 Linear Algebra, Algebra

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