线性规划问题是解析几何的重点,在近几年高考中倍受青睐,并且题型有一定的变化,考查形式灵活多变,体现了“活、变、新”等特点,现就近几年线性规划常考问题进行分类解析.一、已知线性约束条件,探求线性目标函数范围问题例1已知变量x、y满足约束条件1≤x The linear programming problem is the focus of analytic geometry. It has been widely accepted in college entrance examination in recent years. And the types of questions have some changes. The test forms are flexible and flexible, which reflects the characteristics of “living, changing, new” Year linear programming often test the problem classification analysis.A known linear constraints, to explore the scope of the linear objective function Problem Example 1 known variables x, y to meet the constraints 1 ≤ x