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# Matrices

## Introduction to matrices

Practice
Matrix dimensionsGet 3 of 4 questions to level up!
Matrix elementsGet 3 of 4 questions to level up!

## Adding & subtracting matrices

Practice
Add & subtract matricesGet 3 of 4 questions to level up!
Matrix equations: addition & subtractionGet 3 of 4 questions to level up!

## Multiplying matrices by scalars

Practice
Multiply matrices by scalarsGet 3 of 4 questions to level up!
Matrix equations: scalar multiplicationGet 3 of 4 questions to level up!

## Multiplying matrices by matrices

Practice
Multiply matricesGet 3 of 4 questions to level up!

## Elementary matrix row operations

Practice
Matrix row operationsGet 3 of 4 questions to level up!

## Invertible matrices

Practice
Determine inverse matricesGet 3 of 4 questions to level up!
Determine invertible matricesGet 3 of 4 questions to level up!

## Inverse of a matrix by elementary operations

### About this unit

In this chapter we'll be acquainted with the fundamentals of matrix and matrix algebra. Matrices is a brand new concept that you'll be studying and one of its uses is to solve a system of linear equations but it has far reaching applications in almost every area of higher enquiry including advanced quantum physics and artificial intelligence.