Problem (7) Let f(x) = x3 -x and g(x) = x- x2. Find the area of the region enclosed by the graphs of y = f(x) and y = g(x).

Instruction: This is a closed book exam. There are 10 problems and each is worth 10 points. Write everything CLEARLY, any ill-explanation or bad handwriting on your answer sheet should cause no credits. It is YOUR responsibility to turn in a clean, well-organized answer sheet. Problem (1) Find exp(az) cos (bx)dn.