Let A be a n × n matrix with real entries and letλ1 = a + bi (where a and b are real and b = 0) bean eigenvalue of A. Let z1 = x+i y (where x and yboth have real entries) be an eigenvector belongingto λ1 and let z2 = x − i y.(a) Explain why z1 and z2 must be linearly independent.(b) Show that y ≠= 0 and that x and y are linearlyindependent.
Let A be a n × n matrix with real entries and letλ1 = a + bi (where a and b are real and b = 0) bean eigenvalue of A. Let z1 = x+i y (where x and yboth have real entries) be an eigenvector belongingto λ1 and let z2 = x − i y.(a) Explain why z1 and z2 must be linearly independent.(b) Show that y ≠= 0 and that x and y are linearlyindependent.
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
Problem 42EQ
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Let A be a n × n matrix with real entries and let
λ1 = a + bi (where a and b are real and b = 0) be
an eigenvalue of A. Let z1 = x+i y (where x and y
both have real entries) be an eigenvector belonging
to λ1 and let z2 = x − i y.
(a) Explain why z1 and z2 must be linearly independent.
(b) Show that y ≠= 0 and that x and y are linearly
independent.
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