# Find the eigenvalues of a 3x3 matrix

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Find the eigenvalues of the following matrix

Q = Mat[0 0 -2; 1 2 1; 1 0 1].

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##### Solution Summary

A step-by-step solution is provided to show how to find the eigenvalues of a 3x3 matrix.

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First we need to find the characteristic equation. To do this we have to solve det(A-lamda*I)=0. So, let's do it.

We can solve this by ...

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