Problem 5. Let A be a 3 x 3 matrix with real entries and a complex eigenvalue a – ib (b + 0) with corresponding eigenvector ū. Then the other eigenvalues are a + ib and a real number c. Let ū be the eigenvector corresponding to c. Set [c 0 07 C = 0 a P = [w, Reī, Imē] -6 a a) Show that AP PC %3D 1 5 0 1 b) Let A =-5 2 0. Find matrices C and P of the above form such that A = PCP-1. 10 5 c) Diagonalize A

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Chapter2: Second-order Linear Odes
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Problem 5. Let A be a 3 x 3 matrix with real entries and a complex eigenvalue a – ib (b # 0)
with corresponding eigenvector ū. Then the other eigenvalues are a + ib and a real number c.
Let w be the eigenvector corresponding to c. Set
C = 0
0 b
P = [ū, Reī, Imē]
-6
a) Show that AP = PC
1
5
b) Let A =|-5 2 0. Find matrices C and P of the above form such that A = PCP-1.
10 5
c) Diagonalize A
Transcribed Image Text:Problem 5. Let A be a 3 x 3 matrix with real entries and a complex eigenvalue a – ib (b # 0) with corresponding eigenvector ū. Then the other eigenvalues are a + ib and a real number c. Let w be the eigenvector corresponding to c. Set C = 0 0 b P = [ū, Reī, Imē] -6 a) Show that AP = PC 1 5 b) Let A =|-5 2 0. Find matrices C and P of the above form such that A = PCP-1. 10 5 c) Diagonalize A
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Substitute the matrices in the equation and check whether it is true or not.

Determine the eigenvalues and then eigen vectors corresponding to them.

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