Question 1 1 -2 1 2 -1 2 -1 0 -1 -2 1 Let A = and assume that 1 1 10 0 0 1 1-1 0 0 0 0 0 0 1 00 1 -1 is row equivalent to the matrix C = -2 1 B = 1 2 -2 -1 -1 -1 1 Use the above to answer the following questions. 7.1 Find a basis for the nullspace of A. 7.2 Find a basis for the column space of A. 7.3 Find the rank and nullity of A.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.2: Direct Methods For Solving Linear Systems
Problem 3CEXP
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Question 1
1 -2
1 -1
1
2 -1
Let A =
and assume that
1
2 -1
0 -1
-2
1
10 0
0 1 1
0 0 0
0 0 0
1
1 -1
is row equivalent to the matrix C =
-2
1
-1
B =
1
2 -2
-1
-1
-1
1
Use the above to answer the following questions.
7.1 Find a basis for the nullspace of A.
7.2 Find a basis for the column space of A.
7.3 Find the rank and nullity of A.
7.4 Find a subset of the vectors vi = (1, -2, 1, -1), v2 = (0, 1, 2, -1), v3 = (0, 1,2, -1) and
v4 = (0,-1, -2, 1) that forms a basis for the space spanned by these vectors. Explain
clearly.
Transcribed Image Text:Question 1 1 -2 1 -1 1 2 -1 Let A = and assume that 1 2 -1 0 -1 -2 1 10 0 0 1 1 0 0 0 0 0 0 1 1 -1 is row equivalent to the matrix C = -2 1 -1 B = 1 2 -2 -1 -1 -1 1 Use the above to answer the following questions. 7.1 Find a basis for the nullspace of A. 7.2 Find a basis for the column space of A. 7.3 Find the rank and nullity of A. 7.4 Find a subset of the vectors vi = (1, -2, 1, -1), v2 = (0, 1, 2, -1), v3 = (0, 1,2, -1) and v4 = (0,-1, -2, 1) that forms a basis for the space spanned by these vectors. Explain clearly.
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