1. The problem statement, all variables and given/known data I am having a really hard time trying to understand problem #10. The link has problem 10 as well as my instructor's solution on the next page. http://www.scribd.com/doc/81881704 2. Relevant equations 3. The attempt at a solution I have no idea where to start. If anyone could explain this concept in terms of matrices, I would really appreciate it.