I will recycle some of Arne Str?m's problems from this spring: Do the problems stated at http://www.uio.no/studier/emner/sv/oekonomi/ECON4120/v11/undervisningsmateriale/Mat2v11sem06.pdf EXCEPT problem 61. In addition, do problem 59 parts (a) and (c), and problem 69 part (b).