# Science talk:Math Exam Resources/Courses/MATH221/April 2013/Question 08

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Thread title | Replies | Last modified |
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Middle terms... | 1 | 23:58, 4 December 2013 |

Are not always zero for the eigenvalues 5 and -2. The P matrix should be something like

0.7071 -0.6000 0 0 0 1.0000 0.7071 0.8000 0

According to MATLAB (the first column is likely sqrt(2)/2). This gives the diagonal matrix diag(5,-2,3).

CarmenBruni (talk)