b) Find a basis for null(A). What is the dimension of null(A)?

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section: Chapter Questions
Problem 15RQ
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Please do part b of this question. 

1
-4
1.
2
-1
-1
-2
-2
-5
1
-3
Let A =
its RREF is
2
4
-1
1
5
ㅇ
1
1
2
-2
5
2
ㅇ
a) Find a basis for col(A). What is the dimension of col(A)?
b) Find a basis for null(A). What is the dimension of null(A)?
c) Find a basis for row(A). What is the dimension of row(A)?
Transcribed Image Text:1 -4 1. 2 -1 -1 -2 -2 -5 1 -3 Let A = its RREF is 2 4 -1 1 5 ㅇ 1 1 2 -2 5 2 ㅇ a) Find a basis for col(A). What is the dimension of col(A)? b) Find a basis for null(A). What is the dimension of null(A)? c) Find a basis for row(A). What is the dimension of row(A)?
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