For the final seminar #11, do 

* The entire spring 2011 exam:  http://www.uio.no/studier/emner/sv/oekonomi/ECON4120/h11/undervisningsmateriale/M2xv11en.pdf
(Solution will be made available.)

* From the collection, do problem 31 (a). Then instead of (b), calculate the sum of partial elasticities to check homogeneity.
(There are not that many problems on elasticities in the collection, so I take the opportunity to sneak one in.)