Well back again for another Bob posting. well this unit was not extremely difficult except for one part of the unit. That part was the optimization problems. As there are so many ways optimization problems could be done although only one way of solving them is correct. I find that I am getting better at these questions when doing the homework and exercises, although I find these problems will give me the most grief if they are on the test. Other then these optimization problems I found the first derivative and second derivative rules to be understandable and also the mean value theorem to be very straight forward. Well I should get back to the studying. Good luck to everyone tomorrow and make sure to study.