Use Gerschgorin's theorem to show that the largest-modulus eigenvalue λ, of the matrix 4 -1 A = -1 4 -1 0 -1 is such that 2 ≤ |2₁| ≤ 6. Use the power method, with starting vector [-1 1-1], to find 2, correct to one decimal place.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.4: Orthogonal Diagonalization Of Symmetric Matrices
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Use Gerschgorin's theorem to show that the
largest-modulus eigenvalue A, of the matrix
4
-1
A = -1
4 -1
0-1
is such that 2|2₁| ≤ 6.
Use the power method, with starting vector
[-1 1-1], to find 2, correct to one
decimal place.
Transcribed Image Text:Use Gerschgorin's theorem to show that the largest-modulus eigenvalue A, of the matrix 4 -1 A = -1 4 -1 0-1 is such that 2|2₁| ≤ 6. Use the power method, with starting vector [-1 1-1], to find 2, correct to one decimal place.
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