Result analysis of mathematical modeling optimization problem

The optimal value is 4 and the optimal solution is x 1=22.53333, x2=23.20000, X3 = 7.33333；;

Line slack or surplus indicates whether there is surplus in the optimal solution, and if there is no surplus, it is a tight constraint;

Double price represents shadow price, and the objective function can be regarded as "benefit". Once the tightly constrained resources increase, the benefits will inevitably increase, that is to say, if the resources increase 1 unit, the benefits will increase or decrease.

You didn't give the title, model and program, you can only talk about it. You can refer to Jiang Qiyuan's book Mathematical Model, which has a detailed explanation.