d. Suppose that the characteristic polynomial of a matrix A is det(A – AI) = -1³ + 4A. What are the eigenvalues of A? Is A invertible? Is there a basis of R" consisting of eigenvectors of A?

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
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Chapter4: Eigenvalues And Eigenvectors
Section: Chapter Questions
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d-e please

4. Provide a justification for your response to the following questions.
a. Suppose that A is a 3 x 3 matrix having eigenvalues A
are the eigenvalues of 2A?
-3, 3, –5. What
=
b. Suppose that D is a diagonal 3 x 3 matrix. Why can you guarantee that
there is a basis of R° consisting of eigenvectors of D?
If A is a 3 x 3 matrix whose eigenvalues are d = -1,3, 5, can you
guarantee that there is a basis of R° consisting of eigenvectors of A?
С.
d. Suppose that the characteristic polynomial of a matrix A is
det(A – AI) = -1³ + 4A.
What are the eigenvalues of A? Is A invertible? Is there a basis of R"
consisting of eigenvectors of A?
If the characteristic polynomial of A is
е.
det(A – AI) = (4 – A)(-2 – A)(1 – A),
Transcribed Image Text:4. Provide a justification for your response to the following questions. a. Suppose that A is a 3 x 3 matrix having eigenvalues A are the eigenvalues of 2A? -3, 3, –5. What = b. Suppose that D is a diagonal 3 x 3 matrix. Why can you guarantee that there is a basis of R° consisting of eigenvectors of D? If A is a 3 x 3 matrix whose eigenvalues are d = -1,3, 5, can you guarantee that there is a basis of R° consisting of eigenvectors of A? С. d. Suppose that the characteristic polynomial of a matrix A is det(A – AI) = -1³ + 4A. What are the eigenvalues of A? Is A invertible? Is there a basis of R" consisting of eigenvectors of A? If the characteristic polynomial of A is е. det(A – AI) = (4 – A)(-2 – A)(1 – A),
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