The Kuhn-Tucker conditions have been used to derive many significant results in economics. However, thus far, their derivation has been a little bit troublesome. The author directly derives the Kuhn-Tucker conditions by applying a corollary of Farkas's lemma under the Mangasarian-Fromovitz constraint qualification.
Discussion Paper Series A, No. 2011-234, Graduate School of Economics and Business Administration, Hokkaido University, February 2011