1 -1 3 Let A= 1 1 1 -2 (a) Find the projection matrix onto the column space C(A). (b) What vector in C(A) is closest to b = (3,3, –6)?

Elementary Linear Algebra (MindTap Course List)
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ISBN:9781305658004
Author:Ron Larson
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Chapter3: Determinants
Section3.CM: Cumulative Review
Problem 10CM: Find ATA for the matrix A=[531246]. Show that this product is symmetric.
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-1
3
Let A =
1
1
1
-2
(a) Find the projection matrix onto the column space C(A).
(b) What vector in C(A) is closest to b = (3,3, –6)?
Transcribed Image Text:-1 3 Let A = 1 1 1 -2 (a) Find the projection matrix onto the column space C(A). (b) What vector in C(A) is closest to b = (3,3, –6)?
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