To find the inverse of a 3×3 matrix **A** say, (Last video) you will need to be familiar with several new matrix methods first

- Finding the minor of each element of matrix
**A** - Finding the cofactor of matrix
**A**

With these I show you how to find the inverse of a matrix **A**

where I use the example

## Prerequisite: Finding minors of elements in a 3×3 matrix

## Finding the cofactor of a 3×3 matrix

## Putting it all together – Finding the inverse of a 3×3 matrix

## Example to try