1 Applications of matrices

  1.1 Representing simultaneous linear equations

  1.2 Representing networks

2 Definitions

  2.1 Square matrices

  2.2 Some examples of matrices and their classification

  2.3 Equality of matrices

  2.4 The unit matrix

  2.5 The zero matrix

  2.6 The transpose of a matrix

3 Addition and subtraction of matrices

4 Multiplication of a matrix by a number

5 Some simple matrix properties