Let P be the projection matrix corresponding to a subspace S of Rm. Show that (a) P² = P. (b) PT = P.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.7: Applications
Problem 13EQ
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2. Let P be the projection matrix corresponding to a subspace S of Rm. Show that
(a) P² = P.
(b) PT = P.
Transcribed Image Text:2. Let P be the projection matrix corresponding to a subspace S of Rm. Show that (a) P² = P. (b) PT = P.
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