Mathematics at

EXP viewer:  The matrix handout is a file (.wxp) that was created in the word processor EXP, which is specially designed for writing mathematics. To download the viewer, click here:

  http://www.expswp.com/viewer.htm

When you download the viewer, be sure you know where your computer is saving it. Once it is saved, you must go to that file (perhaps with Windows Explorer) and double click on the file name to begin the installation process.
                                

When you open an EXP file, your computer should automatically first open the EXP viewer. The EXP viewer is an almost complete version of the EXP software. You can print from it, even create and print documents with it, but not save documents.