第三章测试1.
Given that a linear programming problem is as following, the optimal solution of dual problem is ( ). A:Y= (1,0,3/5,4/5) B:Y= (0,3/5,1,4/5) C:Y= (4/5,3/5,1,0) D:Y= (0,3/5,4/5,1)
答案:C
2.The following statements of 100% rule of objective function coefficient is correct（ ）.
A:The sum of all changed coefficients percentages of allowable increase and allowable decrease does not reach 100%, the optimal solution won’t change. B:Only can increasing coefficients follow this 100% rule. C:None of above is correct. D:The sum of all changed coefficients percentages of allowable increase and allowable decrease equals 100%, the optimal solution won’t change. 3.The duality of a dual problem is not necessarily the primal problem. ( ）
A:错 B:对 4.Shadow price is actually a marginal price. ( ）
A:错 B:对 5.If the primal problem of linear programming adds a constraint, it is equivalent to adding a variable to the dual problem.（ ）
A:对 B:错
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