(a) Find the rank of the following matrix for all values of a 1 a -1 2 2 -1 a 5 1 10 -61 Show your working.

Elementary Linear Algebra (MindTap Course List)
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Chapter7: Eigenvalues And Eigenvectors
Section7.1: Eigenvalues And Eigenvectors
Problem 61E
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Question 1
(a) Find the rank of the following matrix for all values of a
a -1 2
1
2-1 a 5
1 10 -61
Show your working.
(b) Consider the complex vector space C² (with complex scalars). Find the
real number a, if it exists, such that the following two vectors V₁ and V₂
in C² are linearly dependent:
V₁ = (1+i, 3-i), V₂ = (-2-i, a-3i).
(c) For each of the following matrices A, decide whether there exist distinct
non-zero vectors x₁ and x₂ of appropriate dimensions such that T₁(x₁) =
TA(X₂).
i.
ii.
A =
Justify your answers.
(d) Show that the polynomials
A =
2908 1
28602
52747
215
620
109
518
936
P₁ = 3 + 2x + x², P2=2-x+3x², P3 = −2+x-2x²
form a basis of the vector space P₂ of polynomials of degree at most 2
and find the coordinates of 1+ 2x - x² in this basis. Show your working.
Transcribed Image Text:Question 1 (a) Find the rank of the following matrix for all values of a a -1 2 1 2-1 a 5 1 10 -61 Show your working. (b) Consider the complex vector space C² (with complex scalars). Find the real number a, if it exists, such that the following two vectors V₁ and V₂ in C² are linearly dependent: V₁ = (1+i, 3-i), V₂ = (-2-i, a-3i). (c) For each of the following matrices A, decide whether there exist distinct non-zero vectors x₁ and x₂ of appropriate dimensions such that T₁(x₁) = TA(X₂). i. ii. A = Justify your answers. (d) Show that the polynomials A = 2908 1 28602 52747 215 620 109 518 936 P₁ = 3 + 2x + x², P2=2-x+3x², P3 = −2+x-2x² form a basis of the vector space P₂ of polynomials of degree at most 2 and find the coordinates of 1+ 2x - x² in this basis. Show your working.
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