线性规划问题在各地考试中要求并不高,纵观近几年的模拟卷和高考卷,其中问题的落脚点无外乎求最值或面积等,可谓题题问相似.但有些类似问题却往往成为考生得分的绊脚石,为何?因为问题的难点并不在最值和面积的求解上,而是命题者在线性规划约束条件,即几组变量的关系得到上设置了障碍,可谓处处境不同. Linear programming problems in the examination requirements are not high, look at the recent years of simulation volumes and college entrance examination volume, where the problem is nothing less than asking for the most value or area, can be described as similar questions, but some similar problems Often become the stumbling block of the candidates score? Because the difficulty of the problem is not in the value and area of ​​the solution, but the propositional linear programming constraints, that is, set of obstacles on the relationship between several groups of variables, can be described as different circumstances.