Let A be a 4 × 4 matrix and suppose that A is a diagonalizable. If the characteristic polynomial of A is ca(x) = (x + 1)(x – 1)³ then which of the following are true?

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.4: Similarity And Diagonalization
Problem 50EQ
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A is invertible
A is not invertible
More info is needed to determine if A is invertible
rank(I – A) = 3
rank(I – A) = 1
-
rank(-I – A) =1
rank(-I – A) = 3
Transcribed Image Text:A is invertible A is not invertible More info is needed to determine if A is invertible rank(I – A) = 3 rank(I – A) = 1 - rank(-I – A) =1 rank(-I – A) = 3
Let A be a 4 x 4 matrix and suppose that A is a diagonalizable.
If the characteristic polynomial of A is ca(x) = (x + 1)(x – 1)³ then which of the following are true?
Transcribed Image Text:Let A be a 4 x 4 matrix and suppose that A is a diagonalizable. If the characteristic polynomial of A is ca(x) = (x + 1)(x – 1)³ then which of the following are true?
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