# 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.

https://brainmass.com/math/matrices/diagonal-orthogonal-matrix-17865

#### Solution Summary

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

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