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Diagonal and Orthogonal Matrix

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Diagoalize te given matrix:
A= 3 1 1
1 0 2
1 2 0
an find an orthogonal matrix P such that
P'-1(Pinverse)AP is diagonal.

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Solution Summary

Eigenvalues are used to diagonalize a matrix and to find an orthoganal matrix. the solution is well presented.

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