Prove that for a diagonalisable square matrix A, the determinant is the product of the eigenvalues of A matrix and the trace is the sum of the eigenvalues of A. You may use that the trace is cyclic, that is, Tr(ABC) = Tr(CAB) = Tr(BCA), for any 3 square matrices A, B, C of the same size.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter7: Systems Of Equations And Inequalities
Section7.7: Solving Systems With Inverses
Problem 4SE: Can a matrix with an entire column of zeros have an inverse? Explain why or why not.
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Prove that for a diagonalisable square matrix A, the determinant is the product of
the eigenvalues of A matrix and the trace is the sum of the eigenvalues of A. You
may use that the trace is cyclic, that is, Tr(ABC) = Tr(CAB) = Tr(BCA), for
any 3 square matrices A, B, C of the same size.

Consider the matrix
2
-1
A =| 1
3
-1
-2
2
Transcribed Image Text:Consider the matrix 2 -1 A =| 1 3 -1 -2 2
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