4.1    Organizing Data Into Matrices

4.2    Adding and Subtracting Matrices

4.3   Matrix Multiplication

4.4    Geometric Transformations with Matrices

4.5    2 × 2 Matrices, Determinants, and Inverses

4.6    3 × 3 Matrices, Determinants, and Inverses

4.7    Inverse Matrices and Systems

4.8    Augmented Matrices and Systems

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