Prove that if U is a nonsingular upper triangular matrix, then the diagonal entries of U-1 are

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Prove that if U is a nonsingular upper triangular matrix, then the diagonal entries of U-1 are the reciprocals of the diagonal entries of U.
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Applied Linear Algebra

ISBN: 978-0131473829

1st edition

Authors: Peter J. Olver, Cheri Shakiban

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