To see more examples of finding the derivative go the to link below.
http://www.youtube.com/watch?v=2wH-g60EJ18&feature=relmfu
http://www.youtube.com/watch?v=vzDYOHETFlo
HW: Book 2.1 (or webassign) This should be completed by the end of the day tomorrow (9/24), so try to complete through #48 for tonight.