Let A be an n x n matrix with eigenvalues A₁ and A2, where A₁ A2. If Sx, is the eigenspace associated with A,, i=1,2, then Sx, Sx₂ = {0}.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.1: Inner Product Spaces
Problem 11AEXP
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prove no.3

VII. Prove the following statements.
1. Let B be an orthonormal basis of a finite-dimensional inner product space V. Suppose that the
a1
a2
coordinate vector [v]B =
Then |v|a₁|²+|a₂|² +
·+|an|².
2. If A is similar to a diagonal matrix D then A is similar to AT.
3. Let A be an n x n matrix with eigenvalues A₁ and A2, where A₁ A2. If Sx, is the eigenspace
associated with Ai, i = 1,2, then Sx₁ Sx₂ = {0}.
Transcribed Image Text:VII. Prove the following statements. 1. Let B be an orthonormal basis of a finite-dimensional inner product space V. Suppose that the a1 a2 coordinate vector [v]B = Then |v|a₁|²+|a₂|² + ·+|an|². 2. If A is similar to a diagonal matrix D then A is similar to AT. 3. Let A be an n x n matrix with eigenvalues A₁ and A2, where A₁ A2. If Sx, is the eigenspace associated with Ai, i = 1,2, then Sx₁ Sx₂ = {0}.
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