Let 1 0 4 1 0 1 0 0 0 2 -4 0 0 0 0 1 1 7 1 1 A = 2 8. -1 6 3 0 1 = B. -3 –1 -2 5 - 2 6 0 2 (a) Find a basis B for the column space of A. Explain your reasoning. (b) Express the columns of A not in B as a linear combination of elements in B. (c) What is the dimension of the row space of A? Justify your answer. (d) Is (0, 1, –1, 4, 2) in the solution space of A? Justify your answer.

Linear Algebra: A Modern Introduction
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ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.2: Matrix Algebra
Problem 29EQ: A square matrix is called upper triangular if all of the entries below the main diagonal are zero....
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Let
1 1
-1 6
-2 5
6 0 2
1 0 4 1
0 1
0 0 0 2 -4
0 0 0 0
1
1
7
2
A =
2
8.
3 0
1
= B.
-3
–1
-
2
(a) Find a basis B for the column space of A. Explain your reasoning.
(b) Express the columns of A not in B as a linear combination of elements in B.
(c) What is the dimension of the row space of A? Justify your answer.
(d) Is (0, 1, –1, 4, 2) in the solution space of A? Justify your answer.
Transcribed Image Text:Let 1 1 -1 6 -2 5 6 0 2 1 0 4 1 0 1 0 0 0 2 -4 0 0 0 0 1 1 7 2 A = 2 8. 3 0 1 = B. -3 –1 - 2 (a) Find a basis B for the column space of A. Explain your reasoning. (b) Express the columns of A not in B as a linear combination of elements in B. (c) What is the dimension of the row space of A? Justify your answer. (d) Is (0, 1, –1, 4, 2) in the solution space of A? Justify your answer.
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