This was one of our first work periods this semester. We started our listening to Mr. Maksymchuk's radio stations from Pandora.com. It was quiet for the most part. Questions 3,5,6 from exercise 6 were assigned.
If you are having trouble with matrices, then it might help to go to
http://en.wikipedia.org/wiki/Matrix_(mathematics). All the information there is from contributors to the site, is isn't the most reliable, but it has the basics.
Mr Maxxx plans on putting a chat box on the blog. BEWARE.