/code> - uses <code>gaussianElimination</code> to find the inverse of X, <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><msup><mi>ùêó</mi><mrow><mi>‚àí</mi><mn>1</mn></mrow></msup><annotation encoding="application/x-tex">\mathbf{X}^{-1}</annotation></semantics></math>
</li>
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<code>echelon(X)</code> - uses <code>gaussianElimination</code> to find the reduced echelon form of X</li>
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<code>Ginv(X)</code> - uses <code>gaussianElimination</code> to find the general