For Problems 25-33, determine a spanning set for the null space of the given matrix A.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.9: Properties Of Determinants
Problem 46E
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solve number 29 of the first picture using the second picture you are able to see the matrix which is problem #27 of the second picture.

mogeneous linear system Ax = b, where A is a fixed
m x n matrix and b ( 0) is a fixed vector.
8. V
R2, and S consists of all vectors (x, y) satisfying
x² - y² = 0.
=
9. V =
M₂ (R), and S is the subset of all 2 × 2 matrices
with det(A) = 1.
10. V = Mn (R), and S is the subset of all n x n lower
triangular matrices.
11. V =
Mn (R), and S is the subset of all n x n invertible
matrices.
12. V M₂ (R), and S is the subset of all 2 × 2 matrices
whose four elements sum to zero.
13. V = M3×2(R), and S is the subset of all 3 × 2
matrices such that the elements in each column sum
to zero.
14. V M2x3 (R), and S is the subset of all 2 × 3 matrices
such that the elements in each row sum to 10.
15. V =
M₂ (R), and S is the subset of all 2 × 2 real
symmetric matrices.
16. V is the vector space of all real-valued functions de-
fined on the interval [a, b], and S is the subset of V
consisting of all real-valued functions [a, b] satisfying
f(a) = 5. f(b).
17. V is the vector space of all real-valued functions de-
fined on the interval [a, b], and S is the subset of V
consisting of all real-valued functions [a, b] satisfying
f(a) = 1.
on I.
For Problems 23-29, determine the null space of the given
matrix A.
23. A = [1 4].
24. A =
25. A:
26. A
=
=
27. A:
=
28. A = =
29. A =
[1 −3 2].
[3
2 -4
1
2
-3 -5
y" +2y-y=1
1234
5678
−1
[
1-2
4 -7 -2
3
ܨܚ ܡܐ ܀
3-2
3
10 -4
2 5-6
1
i -2
4i -5
-1 -3i i
1
6
30. Show that the set of all solutions to the nonhomoge-
neous differential equation
Transcribed Image Text:mogeneous linear system Ax = b, where A is a fixed m x n matrix and b ( 0) is a fixed vector. 8. V R2, and S consists of all vectors (x, y) satisfying x² - y² = 0. = 9. V = M₂ (R), and S is the subset of all 2 × 2 matrices with det(A) = 1. 10. V = Mn (R), and S is the subset of all n x n lower triangular matrices. 11. V = Mn (R), and S is the subset of all n x n invertible matrices. 12. V M₂ (R), and S is the subset of all 2 × 2 matrices whose four elements sum to zero. 13. V = M3×2(R), and S is the subset of all 3 × 2 matrices such that the elements in each column sum to zero. 14. V M2x3 (R), and S is the subset of all 2 × 3 matrices such that the elements in each row sum to 10. 15. V = M₂ (R), and S is the subset of all 2 × 2 real symmetric matrices. 16. V is the vector space of all real-valued functions de- fined on the interval [a, b], and S is the subset of V consisting of all real-valued functions [a, b] satisfying f(a) = 5. f(b). 17. V is the vector space of all real-valued functions de- fined on the interval [a, b], and S is the subset of V consisting of all real-valued functions [a, b] satisfying f(a) = 1. on I. For Problems 23-29, determine the null space of the given matrix A. 23. A = [1 4]. 24. A = 25. A: 26. A = = 27. A: = 28. A = = 29. A = [1 −3 2]. [3 2 -4 1 2 -3 -5 y" +2y-y=1 1234 5678 −1 [ 1-2 4 -7 -2 3 ܨܚ ܡܐ ܀ 3-2 3 10 -4 2 5-6 1 i -2 4i -5 -1 -3i i 1 6 30. Show that the set of all solutions to the nonhomoge- neous differential equation
to the mnear
x - 2yz = 0.
Determine a set of vectors that spans S.
24. Let S be the subspace of P3 (R) consisting of all poly-
nomials p(x) in P3 (R) such that p'(x) = 0. Find a set
of vectors that spans S.
For Problems 25–33, determine a spanning set for the null
space of the given matrix A.
25. The matrix A defined in Problem 23 in Section 4.3.
26. The matrix A defined in Problem 24 in Section 4.3.
27. The matrix A defined in Problem 25 in Section 4.3.
28. The matrix A defined in Problem 26 in Section 4.3.
29. The matrix A defined in Problem 27 in Section 4.3.
30. The matrix A defined in Problem 28 in Section 4.3.
31. The matrix A defined in Problem 29 in Section 4.3.
123 5
1 3 4 2
246 -1
32. A =
41. Consider the vectors
01
A₁ = [2 ~]-42= [-2 1] -4 = [19]
A1
A2
A3
2
in M₂ (R). Determine span{A₁, A2, A3}.
42. Consider the vectors
2 nes m spankP1, P2J.
12
^-[43]^2-[73]
A2
-1
A₁ =
=
1 −1
in M₂ (R). Find span{A1, A2}, and determine whether
or not B
lies in this subspace.
1
[34]
43. Let V = C(I) and let S be the subspace of V
spanned by the functions
f(x)=coshx, g(x) = sinhx.
(a) Give an expression for a general vector in S.
(b) Show that S is also spanned by the functions
h(x) = e*, j(x) = e¯x.
Transcribed Image Text:to the mnear x - 2yz = 0. Determine a set of vectors that spans S. 24. Let S be the subspace of P3 (R) consisting of all poly- nomials p(x) in P3 (R) such that p'(x) = 0. Find a set of vectors that spans S. For Problems 25–33, determine a spanning set for the null space of the given matrix A. 25. The matrix A defined in Problem 23 in Section 4.3. 26. The matrix A defined in Problem 24 in Section 4.3. 27. The matrix A defined in Problem 25 in Section 4.3. 28. The matrix A defined in Problem 26 in Section 4.3. 29. The matrix A defined in Problem 27 in Section 4.3. 30. The matrix A defined in Problem 28 in Section 4.3. 31. The matrix A defined in Problem 29 in Section 4.3. 123 5 1 3 4 2 246 -1 32. A = 41. Consider the vectors 01 A₁ = [2 ~]-42= [-2 1] -4 = [19] A1 A2 A3 2 in M₂ (R). Determine span{A₁, A2, A3}. 42. Consider the vectors 2 nes m spankP1, P2J. 12 ^-[43]^2-[73] A2 -1 A₁ = = 1 −1 in M₂ (R). Find span{A1, A2}, and determine whether or not B lies in this subspace. 1 [34] 43. Let V = C(I) and let S be the subspace of V spanned by the functions f(x)=coshx, g(x) = sinhx. (a) Give an expression for a general vector in S. (b) Show that S is also spanned by the functions h(x) = e*, j(x) = e¯x.
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