Complete parts a and b below for the matrix A. -49 63 28 - 35 - 21 21 49 28 - 42 - 49 14 42 35 - 35 A= - 35 49 42 - 35 42 - 14 - 56 21 - 35 - 56 7 49 28 - 56 -42 56 35 - 28 - 28- 63 -21 a. Construct matrices C and N whose columns are bases for Col A and NulA, respectively, and construct a matrix R whose rows form a basis for Row A. c-O N=O R= b. Construct a matrix M whose columns form a basis for Nul A", form the matrices S=[RT N]and T=[c m], and explain why S and T should be square. Verify that both S and T are invertible. M=[ The matrix S= [RT N]is -O because the columns of R"and N are in Rand dim Row A+ dim Nul A=D. The matrix T=[CM]isI×O because the columns of C and M are in R and dim Col A + dim Nul AT =O by the Rank Theorem, since Col A = Row A".
Complete parts a and b below for the matrix A. -49 63 28 - 35 - 21 21 49 28 - 42 - 49 14 42 35 - 35 A= - 35 49 42 - 35 42 - 14 - 56 21 - 35 - 56 7 49 28 - 56 -42 56 35 - 28 - 28- 63 -21 a. Construct matrices C and N whose columns are bases for Col A and NulA, respectively, and construct a matrix R whose rows form a basis for Row A. c-O N=O R= b. Construct a matrix M whose columns form a basis for Nul A", form the matrices S=[RT N]and T=[c m], and explain why S and T should be square. Verify that both S and T are invertible. M=[ The matrix S= [RT N]is -O because the columns of R"and N are in Rand dim Row A+ dim Nul A=D. The matrix T=[CM]isI×O because the columns of C and M are in R and dim Col A + dim Nul AT =O by the Rank Theorem, since Col A = Row A".
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.3: The Gram-schmidt Process And The Qr Factorization
Problem 23EQ
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