This article is within the scope of WikiProject Economics, a collaborative effort to improve the coverage of Economics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
i have chosen this topic to edit for my internal assessment
There is a lack of precision: what is the function: f(k)? Yes, I know ... but it should not be necessary to know. — Preceding unsigned comment added by 188.8.131.52 (talk) 09:40, 24 December 2014 (UTC)