**Problems 1-3**

There questions are basically definitions and procedures. Read the book and then paraphrase each in your own words.

**Problems 4-13**

These problems are designed to test your understanding the terminology associated with matrices.

**Problem 14**

Arrange the coefficients in order before writing them in matrix form. See Example 1.

**Problem 15**

Choose the appropriate variables as shown in Example 2.

**Problem 16-17**

Use RowSwap.

**Problem 18-19**

Use *Row.

**Problem 20-23**

Use *Row+.

**Problem 24-25**

Use *Row.

**Problem 26-27**

Use *Row+.

**Problem 28-31**

Use *Row+.

**Problem 32-35**

Use *Row.

**Problem 36-39**

Use *Row+.

**Problem 40-47**

Write each system in matrix form and then apply the Gauss-Jordan method. If you have a calculator available, then you can use the matrix commands available to you. See Example 3.[/tipppy]

**Problem 48-57**

Write each system in matrix form and then apply the Gauss-Jordan method. If you have a calculator available, then you can use the matrix commands available to you. See Example 4.

### Note: Homework Hints are given only for the Level 1 and Level 2 problems.

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 problems, check some sources for help on the internet (see the LINKS for that particular section. As a last resort, you can call the author at (707) 829-0606.

On the other hand, the problems designated “Problem Solving” generally require techniques that do not have textbook examples.

There are many sources for homework help on the internet.

**Algebra.help**

Here is a site where technology meets mathematics. You can search a particular topic or choose lessons, calculators, worksheets for extra practice or other resources.

http://www.algebrahelp.com/

**Quick Math**

This site provides online graphing calculators. This is especially useful if you do not have your own calculator.

http://www.quickmath.com/

**The Math Forum @ Drexel**

This site provides an internet mathematics library that can help if you need extra help. For additional homework help at this site, click one of the links in the right-hand column.

http://mathforum.org/