Matrix

Suppose Madhu has 3 pens & 2 notebooks,
   and Sanjay has 1 pen & 4 notebooks

How can we represent it in an easy way?

We use Matrix?

So, we write the data as

It is in the form of a table like

Now,

Suppose Tarun has 5 pens & 3 notebooks

How will we write this in a matrix?

Madhu has 3 pens & 2 notebooks

Sanjay has 1 pens & 4 notebooks

Tarun has 5 pens & 3 notebooks

So, our matrix looks like

In this matrix

So, in matrix B, we have

3 Rows,
2 Columns
& 6 elements - 3, 2, 1, 4, 5, 3

Similarly, we can have a matrix of any number of rows & columns, and elements can be numbers or variables

Example

Suppose we have vertex of quadrilateral as

A (1, 2), B (0, 8), C (4, 0), D (3, 3).

How can we represent it as a matrix.