function vand_ex_1_1()
% Solution to Exercise 1.1 of Vanderbei.
% Michael Floater, 3 Feb 2020.

dict0 = [0,25,30;40,-1/200,-1/140;6000,-1,0;4000,0,-1]
dict1 = pivot(dict0,1,2)
dict2 = pivot(dict1,2,1)


