=:"Consider the matrix formed by five vectors a¡: 1 -2 1 0 -3 1 -2 0 A = (a₁ a2 a3 as as) = 0 -1 -1 1 -1 39 0 0 3 3 -12/ " in obvious notation. (i) Find a basis for the column space of A. (ii) Express the non-basis vectors aj, if any, as a linear combination of the vectors found in item (i). (iii) What's the rank of A? (iv) What is the dimension of the null space of A (ie, the nullity of A)?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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=:Consider the matrix formed by five vectors aj:
1
0
-2
0
A = (ai a₂ a3 a4 a) =
0 -2 1
0
3
-1 -3 1
-1 1
-1
3 9 0 -12
3
2
in obvious notation.
(i) Find a basis for the column space of A. (ii) Express the non-basis vectors aj, if
any, as a linear combination of the vectors found in item (i). (iii) What's the rank
of A? (iv) What is the dimension of the null space of A (ie, the nullity of A)?
Transcribed Image Text:=:Consider the matrix formed by five vectors aj: 1 0 -2 0 A = (ai a₂ a3 a4 a) = 0 -2 1 0 3 -1 -3 1 -1 1 -1 3 9 0 -12 3 2 in obvious notation. (i) Find a basis for the column space of A. (ii) Express the non-basis vectors aj, if any, as a linear combination of the vectors found in item (i). (iii) What's the rank of A? (iv) What is the dimension of the null space of A (ie, the nullity of A)?
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