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线性规划问题是历年高考热点,以容易题和中档题居多,偶有难题出现.线性规划问题的解决通常是由不等式组(应用题要自己列出不等式组)画出平面区域,考察目标函数的几何意义(通常是直线的纵轴截距、斜率,距离等),再作图找交点,最后计算出结果.但有些线性规划问题,由于作图粗糙不准,而容易出错;或题中含有参数使得作图困难或作出的图形随参数的变化而变化,因此不能求
The linear programming problem is the hot spot of the college entrance examination over the years, with easy questions and mid-range questions mostly, occasional problems arise.Linear programming problems are usually solved by the inequality group (application questions should list their own inequality group) to draw the plane area, examine the objective function Geometric meanings (usually the vertical axis of the intercept, slope, distance, etc.), and then find the intersection of the map, and finally calculate the results.However, some linear programming problems, due to rough drawing is not allowed, and error-prone; Parameters make drawing difficult or make graphs that vary with parameters and therefore can not be solved