Consider the following matrix: A-() 1. Determine whether A is diagonalizable over C. If so, diagonalize it.

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Chapter7: Eigenvalues And Eigenvectors
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Consider the following matrix:
A =
5 4
1. Determine whether A is diagonalizable over C. If so, diagonalize it.
2. Find an invertible matrix Q € Mat22(R), and real numbers r, 0 €R
such that 0 <r and
(cos(0)
- sin
Q-1. A · Q = r ·
sin(8) cos(8) )
3. Use your answer from part (2) to find A14.
Hint: Recall that for an invertible n x n matrix P and any n x n
matrix B, that one has
(P ·B · P-!)k = P · B* · P-1
for any natural number k.
Transcribed Image Text:Consider the following matrix: A = 5 4 1. Determine whether A is diagonalizable over C. If so, diagonalize it. 2. Find an invertible matrix Q € Mat22(R), and real numbers r, 0 €R such that 0 <r and (cos(0) - sin Q-1. A · Q = r · sin(8) cos(8) ) 3. Use your answer from part (2) to find A14. Hint: Recall that for an invertible n x n matrix P and any n x n matrix B, that one has (P ·B · P-!)k = P · B* · P-1 for any natural number k.
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