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Lesson 1, Topic 2
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Types of Matrices

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Row matrix:

A row matrix consist of one row only. E.g; ( 4 3 7 2) is a row matrix of order 1 × 4.

Column matrix:

A column matrix consist of one column only.

E.g; Example: $$\scriptsize \begin{pmatrix} 6 \\ 3 \\ 8 \end{pmatrix}$$

This is a column matrix of order 3 × 1.

Single element matrix:

A single number may be regarded as a 1 × 1 matrix, i.e. having 1 row and 1 column.

Equal matrix:

Two matrices are said to be equal if corresponding elements throughout are equal. Therefore, the two matrices must be of the same order.

$$\scriptsize \begin{pmatrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \end{pmatrix} = \begin{pmatrix} 4 & 6 & 5 \\ 2 & 3 & 7 \end{pmatrix}$$

then $$\scriptsize a_{11} = 4, a_{12} = 6, a_{13} = 5 \\ \scriptsize a_{21} = 2, a_{22} = 3, a_{23} = 7$$

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