4.2 Suppose that A and B are 3 x 3 matrices so that: E (A) is the xy-plane, and Eo(A) is the z-axis. E-1(B) is the xy-plane, and E2(B) is the z-axis. Note that En (C) is the eigenspace of matrix C for eigenvalue A. It is equal to {x | Cx = Ax). Show that AB = BA. Hint: what sets of basic eigenvectors do the matrices have?

Linear Algebra: A Modern Introduction
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ISBN:9781285463247
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Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
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plz solve 4.2

4
Suppose A is a matrix with characteristic polynomial
4.1
CA(x) = x²(x – 1)³ (x+2)².
Determine the possible value(s) of rank(A).
Suppose that A and B are 3 x 3 matrices so that:
4.2
E1(A) is the xy-plane, and Eo(A) is the z-axis.
• E-1(B) is the xy-plane, and E2(B) is the z-axis.
Note that En (C) is the eigenspace of matrix C for eigenvalue A. It is equal to {x | Cx = Ax}.
Show that AB = BA.
Hint: what sets of basic eigenvectors do the matrices have?
Transcribed Image Text:4 Suppose A is a matrix with characteristic polynomial 4.1 CA(x) = x²(x – 1)³ (x+2)². Determine the possible value(s) of rank(A). Suppose that A and B are 3 x 3 matrices so that: 4.2 E1(A) is the xy-plane, and Eo(A) is the z-axis. • E-1(B) is the xy-plane, and E2(B) is the z-axis. Note that En (C) is the eigenspace of matrix C for eigenvalue A. It is equal to {x | Cx = Ax}. Show that AB = BA. Hint: what sets of basic eigenvectors do the matrices have?
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