Can somebody please help me with this question. I keep thinking I have made some progress on it and it turns out to be totally useless work. Spent almost 2 days struggling over this problem and 2 others and they have to be done for Monday. I have scanned in the question below. http://img168.imageshack.us/img168/241/prob6ud2.jpg [Broken] If anyone can help me with this it will be greatly greatly appreciated.