Inverse of 3 by 3 Matrix Using Gauss-Jordan on Video

In this video, the Matrix Inverse of a 3 by 3 matrix is found using Gauss-Jordan method based on elementary row operations is presented.
Question: Find the inverse of the 3 by 3 matrix is given by \[ \begin{bmatrix} -1 & 2 & 1 \\ 0 & 1 & 1 \\ 1 & -1 & -1 \end{bmatrix} \]

Inverse of a 3 by 3 Matrix Using Ga...
Inverse of a 3 by 3 Matrix Using Gauss-Jordan Method

More References and links

  1. Matrix Inverse
  2. The Elimination Method in Systems - Questions with Solutions
  3. Linear Algebra
  4. Math Videos

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