**Matrix theory**is a branch of

**mathematics**which is focused on study of

**matrices**. Initially, it was a sub-branch of linear algebra, but soon it grew to cover subjects related to graph

**theory**, algebra, combinatorics and statistics as well.

Similarly, it is asked, how do matrices work?

In order to

**multiply matrices**, Step 1: Make sure that the the number of columns in the 1^{st}one equals the number of rows in the 2^{nd}one. (The pre-requisite to be able to**multiply**) Step 2:**Multiply**the elements of each row of the first**matrix**by the elements of each column in the second**matrix**.Where do we use Matrix in real life?

In geology,

**matrices**are**used**for making seismic surveys. They are**used**for plotting graphs, statistics and also to do scientific studies and research in almost different fields.**Matrices**are also**used**in representing the**real world**data's like the population of people, infant mortality rate, etc.What is the Matrix diagram?

A

**Matrix Diagram**(MD) is a tool that allows a team to identify the presence and strengths of relationships between two or more lists of items. It provides a compact way of representing many-to-many relationships of varying strengths. An example**matrix diagram**is shown in figure 1.