Suppose a 3 x 3 matrix A admits a factorization as A = PDP - , where

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Suppose a 3 x 3 matrix A admits a factorization as A = PDP-¹, where P is some invertible 3 x 3 matrix and D is the diagonal matrix

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Show that this factorization is useful when computing high powers of A. Find fairly simple formulas for A², A³, and Ak (k a positive integer), using P and the entries in D.

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Linear Algebra And Its Applications

ISBN: 9781292351216

6th Global Edition

Authors: David Lay, Steven Lay, Judi McDonald

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