Question 2 (a) Find an orthonormal basis of the vector space P₂ of polynomials of degree at most 2 with respect to the inner product (f, g) = [ f(x)g(x) dx Show your working. (b) Let A be the following matrix: A 10 a 010 a 01 For a 0, find an eigendecomposition of A. (c) Consider the set W of all 2 x 2 matrices A such that both (1, 2) and (2, -1) are eigenvectors of A. Prove that W is a subspace of the space of all 2 x 2 matrices and find the dimension of W.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.3: Eigenvalues And Eigenvectors Of N X N Matrices
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Question 2
(a) Find an orthonormal basis of the vector space P₂ of polynomials of degree
at most 2 with respect to the inner product
(f. g) = [°¸ ƒ(x)g(x) dx
Show your working.
(b) Let A be the following matrix:
A =
1 0 a
0
a 0 1
For a 0, find an eigendecomposition of A.
(c) Consider the set W of all 2 x 2 matrices A such that both (1, 2) and
(2,-1) are eigenvectors of A. Prove that W is a subspace of the space of
all 2 x 2 matrices and find the dimension of W.
Transcribed Image Text:Question 2 (a) Find an orthonormal basis of the vector space P₂ of polynomials of degree at most 2 with respect to the inner product (f. g) = [°¸ ƒ(x)g(x) dx Show your working. (b) Let A be the following matrix: A = 1 0 a 0 a 0 1 For a 0, find an eigendecomposition of A. (c) Consider the set W of all 2 x 2 matrices A such that both (1, 2) and (2,-1) are eigenvectors of A. Prove that W is a subspace of the space of all 2 x 2 matrices and find the dimension of W.
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