23. The accompanying figure shows a rectangular xy-coordin- ate system determined by the unit basis vectors i and j and an x'y-coordinate system determined by unit basis vectors u, and u₂. Find the x'y'-coordinates of the points whose xy-coordinates are given. a. (√3,1) b. (1,0) c. (0,1) d. (a,b) Ay and y' X jand u₂ 30° u₁

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Chapter4: Eigenvalues And Eigenvectors
Section4.5: Iterative Methods For Computing Eigenvalues
Problem 51EQ
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23. The accompanying figure shows a rectangular xy-coordin-
ate system determined by the unit basis vectors i and j and
an x'y'-coordinate system determined by unit basis vectors
u₁ and u₂. Find the x'y'-coordinates of the points whose
xy-coordinates are given.
a. (√3,1)
b. (1,0)
c. (0,1) d. (a,b)
Ay and y'
j and u₂
30°
x
FIGURE Ex-23
24. The accompanying figure shows a rectangular xy-coordinate
system and an x'y'-coordinate system with skewed axes.
Assuming that 1-unit scales are used on all the axes, find the
x'y'-coordinates of the points whose xy-coordinates are given.
a. (1,1) b. (1,0) c. (0,1) d. (a, b)
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4.5 Coordinates and Basis 247
a. Find w if S is the basis in Exercise 2.
b. Find q if S is the basis in Exercise 3.
c. Find B if S is the basis in Exercise 5.
28. The basis that we gave for M₂2 in Example 4 consisted of non-
invertible matrices. Do you think that there is a basis for M22
consisting of invertible matrices? Justify your answer.
Working with Proofs
29. Prove that R* is an infinite-dimensional vector space.
30. Let TARR" be multiplication by an invertible matrix
A, and let {u₁, ₂,..., u} be a basis for R". Prove that
{TA(U₁), TA (U₂),..., TA (un)} is also a basis for R".
31. Prove that if V is a subspace of a vector space W and if V is
infinite-dimensional, then so is W.
True-False Exercises
TF. In parts (a)-(e) determine whether the statement is true or
false, and justify your answer.
a. If V = span{v₁,...,Vn}, then {v₁,...,v} is a basis for V.
b. Every linearly independent subset of a vector space V is a
basis for V.
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Transcribed Image Text:Wondershare PDFelement File Home Help T Add Text Elementary_..._lib_org.pdf x + Bookmark Add □ O ΣΣΣΣΣΣ A+ A Cover Applications and Historical Topics Title Page Copyright About the Authors Preface Contents > 1: Systems of Linear Equations and Matrices > 2: Determinants > 3: Euclidean Vector Spaces >4: General Vector Spaces > 5: Eigenvalues and Eigenvectors > 6: Inner Product Spaces 7: Diagonalization and Quadratic Forms Add Image Link > > 8: General Linear Transformations >9: Numerical Methods Appendix A: Working with Proofs se Elementary_Linear_Algebra_by_Howard_Anton, Anton_Kaul_z_lib_org.pdf Comment Edit Convert Tool View Form Protect Page Template Watermark Background In Header & Footer 1 Bates Number At least one signature has problems. 23. The accompanying figure shows a rectangular xy-coordin- ate system determined by the unit basis vectors i and j and an x'y'-coordinate system determined by unit basis vectors u₁ and u₂. Find the x'y'-coordinates of the points whose xy-coordinates are given. a. (√3,1) b. (1,0) c. (0,1) d. (a,b) Ay and y' j and u₂ 30° x FIGURE Ex-23 24. The accompanying figure shows a rectangular xy-coordinate system and an x'y'-coordinate system with skewed axes. Assuming that 1-unit scales are used on all the axes, find the x'y'-coordinates of the points whose xy-coordinates are given. a. (1,1) b. (1,0) c. (0,1) d. (a, b) APO u₁ iPhone/iPad Buy Now Edit Mode 4.5 Coordinates and Basis 247 a. Find w if S is the basis in Exercise 2. b. Find q if S is the basis in Exercise 3. c. Find B if S is the basis in Exercise 5. 28. The basis that we gave for M₂2 in Example 4 consisted of non- invertible matrices. Do you think that there is a basis for M22 consisting of invertible matrices? Justify your answer. Working with Proofs 29. Prove that R* is an infinite-dimensional vector space. 30. Let TARR" be multiplication by an invertible matrix A, and let {u₁, ₂,..., u} be a basis for R". Prove that {TA(U₁), TA (U₂),..., TA (un)} is also a basis for R". 31. Prove that if V is a subspace of a vector space W and if V is infinite-dimensional, then so is W. True-False Exercises TF. In parts (a)-(e) determine whether the statement is true or false, and justify your answer. a. If V = span{v₁,...,Vn}, then {v₁,...,v} is a basis for V. b. Every linearly independent subset of a vector space V is a basis for V. Search Tools Edit Jump to Signature Read Log In x
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