Orthogonally diagonalize the​ matrix, giving an orthogonal matrix P and a diagonal matrix D. To save​ time, the eigenvalues are 13 and 4.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Orthogonally diagonalize the​ matrix, giving an orthogonal matrix P and a diagonal matrix D. To save​ time, the eigenvalues are 13 and 4. This is my answer but it says its wrong which I don't understand why.

Orthogonally diagonalize the matrix, giving an orthogonal matrix P and a diagonal matrix D. To save time, the eigenvalues are 13 and 4.
9 - 2 4
A =
- 2
12 2
4
2 9
Enter the matrices P and D below.
1
13
0 0
1
13 0
V5
3
0 4
1
(Use a comma to separate answers as needed. Type exact answers, using radicals as needed. Do not label the matrices.)
Transcribed Image Text:Orthogonally diagonalize the matrix, giving an orthogonal matrix P and a diagonal matrix D. To save time, the eigenvalues are 13 and 4. 9 - 2 4 A = - 2 12 2 4 2 9 Enter the matrices P and D below. 1 13 0 0 1 13 0 V5 3 0 4 1 (Use a comma to separate answers as needed. Type exact answers, using radicals as needed. Do not label the matrices.)
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