Do problem 2 from the Autumn 2007 exam, which is available at
http://www.uio.no/studier/emner/sv/oekonomi/ECON4120/h09/undervisningsmateriale/eksamenssett/M2x071207en.pdf



From the exam problem collection, do:

8

59

125

132
Also, for problem 132: You will find that in most cases, there is a local minimum point (x*,y*),
and the local minimum value f(x*,y*) will then be a function u(a). 
* Find u'(a).

73 (a Lagrange problem, theory known from ECON2200 but will be reviewed during the lectures Nov 2--3 lectures)