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## Homework Statement

Solve for x: Ax = y.

A = {{2 0 1},

{1 1 4},

{2 2 1}}

y = {{1},

{1},

{1}}

## Homework Equations

Basic Matrix operations

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I have a vague idea how I'm supposed to do this, but I have no attempt yet.. eigenvalues and eigenvectors come to mind..in some way