Matrices — Part 1: Order, types, transpose and symmetry: visual lesson, ISC Class 12 Mathematics

Lesson

Matrices, Part 1

A rectangular table of numbers, handled as one object.

In this lesson you will

The same data as the $2 \times 3$ matrix $\begin{bmatrix} 78 & 64 & 85 \\ 55 & 90 & 72 \end{bmatrix}$.
Imagined Ooty school	English	Maths	Science
Arjun	$78$	$64$	$85$
Bela	$55$	$90$	$72$

Concept

Part 1 at a glance.

Concept

A matrix with $m$ rows and $n$ columns has order $m \times n$ . The entry in row $i$ and column $j$ is written $a_{ij}$ .

A = [a_{ij}]_{m \times n}