Problems to do before the seminars start, ++

Seminar problems are posted in the schedule, so this has to be posted here. You should have a look at 

• Problems: Arne Str?m's pre-seminar1 problem set 2011 at http://www.uio.no/studier/emner/sv/oekonomi/ECON4120/v11/undervisningsmateriale/hjemmelekse1.pdf
• Theory review: Back when environmental and development economics students started at  and those students started their Master study with ECON4145 (now 4140), Knut Syds?ter and Arne Str?m produced this prerequisite note for new students. You should know items:
  • 1 through 17,  21, 25 through 30, 32 and 37-38 before starting Mathematics 2, with the following reservation: disregard the notation boldface x for (x₁, ..., x_n) in items 25ff
  • 18-19 by yesterday's lecture.