Suppose that Ax = b is a consistent linear system, and that p is a solution of it. Prove that every solution of Ax =b can be written as x = p+z where z E null(A). Let A be an m x n matrix, and let B be an n × p matrix. Prove that (AB)™ = B" A".

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ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter6: Matrices And Determinants
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1. (a) Suppose that Ax = b is a consistent linear system, and that p is a solution of it. Prove that every
solution of Ax = b can be written as x =p+z where z E null(A).
(b) Let A be an m x n matrix, and let B be an n x p matrix. Prove that (AB)" = B™ AT.
Transcribed Image Text:1. (a) Suppose that Ax = b is a consistent linear system, and that p is a solution of it. Prove that every solution of Ax = b can be written as x =p+z where z E null(A). (b) Let A be an m x n matrix, and let B be an n x p matrix. Prove that (AB)" = B™ AT.
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