 # Algebra 2 - First Edition

## Chapter 3: Matrices

Some links are repeated for use with more than one lesson.

Please report broken links to Kathy Kral

### The following links are applicable to the entire chapter.

http://www.sosmath.com/matrix/matrix.html
This page contains links to several topics involving matrices including applications.

http://edhelper.com/Matrices.htm
This page contains free printable practice worksheets on various matrix topics.

### 3.1 Matrix operations

http://www.sosmath.com/matrix/matrix0/matrix0.html
NEW This page presents a simple example to demonstrate matrix addition and subtraction.

### 3.2 Matrix Multiplication

http://www.purplemath.com/modules/mtrxmult.htm
This page contains a tutorial on matrix multiplication and an animation on how to use your hand to keep track of the steps.

http://www.mai.liu.se/~halun/matrix/
This page contains an tutorial on matrix multiplication.

http://www.easycalculation.com/matrix/matrix-multiplication.php
This page contains a matrix calculator that shows the steps.

### 3.3 Determinants

http://www.purplemath.com/modules/determs.htm
This page contains a tutorial with animation on finding determinants.

### 3.4  Inverse and Identity Matrices

http://chortle.ccsu.edu/VectorLessons/vmch16/vmch16_1.html
This page contains an introduction to identity and inverse matrices as well as guiding questions.

http://people.richland.edu/james/lecture/m116/matrices/inverses.html
This page contains a shortcut for finding the inverse of a matrix and steps for using a calculator.

### 3.5 Cramer’s Rule

http://www.wisc-online.com/objects/index_tj.asp?objID=TMH1401
This page contains an interactive tutorial on Cramer’s Rule.