Displaying intermediate optimization steps with linprog

Hello, all, thank you for reading this,

I was wondering, how can I get MATLAB so solve for the intermediate steps with the linprog function, so I can begin to understand where it starts and how it approaches the answer.

An example of the code is here:

f = [-6;-4]; % linprog solves minimization problems
A = [3 2;
  -4 9];
b = [8; 20];

lb = [0;0];
up = [Inf; Inf];

options = optimset('LargeScale', 'off');
xsol = linprog(f,A,b,[],[],lb,up,[],options)

and I already solved this by hand and via MATLAB. I just want to know so I can better understand the function and also check some other intermediate steps.

Thanks for your help.

[Azzi Abdelmalek]

what do you want to know?