华东交通大学：《数学模型》课程教学资源（讲义）例2 加工奶制品的生产计划

例2加工奶制品的生产计划 程序如下 max 72x+64, 行 2行牛奶约束 12x+8y<480 3行劳力约束 4行甲类设备约束 结果报告 LP OPTIMUM FOUND AT STEP OBJECTIVE FUNCTION VALUE 3360.000 VARIABLE VALUE REDUCED COST 20.000000 0.000000 30.000000 0.000000 ROW SLACK OR SURPLUS DUAL PRICES 0.000000 234 4800000(影子价格) 0.000000 40.000000 0.000000 NO. ITERATIONS= RANGES IN WHICH THE BASIS IS UNCHANGED: OB COEFFICIENT RANGES VARIABLE CURRENT ALLOWABLE ALLOWABLE COEF INCREASE DECREASE 72.0000 24.000000 64.000000 8.000000 16.000000 RIGHTHAND SIDE RANGES ROW CURRENT ALLOWABLE ALLOWABLE RHS INCREASE DECREASE 50.000000 10.000000 6.666667 53.333332 INFINITY 40.000000

例 2 加工奶制品的生产计划 程序如下 max 72x+64y 1 行 st x+y<50 2 行 牛奶约束 12x+8y<480 3 行 劳力约束 3x<100 4 行 甲类设备约束 end 结果报告 LP OPTIMUM FOUND AT STEP 2 OBJECTIVE FUNCTION VALUE 1) 3360.000 VARIABLE VALUE REDUCED COST X 20.000000 0.000000 Y 30.000000 0.000000 ROW SLACK OR SURPLUS DUAL PRICES 2) 0.000000 48.000000（影子价格） 3) 0.000000 2.000000 4) 40.000000 0.000000 NO. ITERATIONS= 2 RANGES IN WHICH THE BASIS IS UNCHANGED: OBJ COEFFICIENT RANGES VARIABLE CURRENT ALLOWABLE ALLOWABLE COEF INCREASE DECREASE X 72.000000 24.000000 8.000000 Y 64.000000 8.000000 16.000000 RIGHTHAND SIDE RANGES ROW CURRENT ALLOWABLE ALLOWABLE RHS INCREASE DECREASE 2 50.000000 10.000000 6.666667 3 480.000000 53.333332 80.000000 4 100.000000 INFINITY 40.000000