# Diagonal and Orthogonal Matrix

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.

$2.19