学习《线性规划》应注意的问题

• 作 者: 范海深
• 机 构: 四川省甘孜州康北民族高级中学
• 出 处: 数学大世界(高中生数学辅导版)
• 发表日期: 2005年06期
• 关键词: 二元一次不等式 平面区域 坐标平面 可行域 截距 目标函数 不等式组 函数方法 阴影部分 解方程组

一、准确判断二元一次不等式表示的平面区域二元一次不等式表示的平面区域是半个坐标平面,分界线就是相应的二元一次方程所对应的直线.判断时,可先将不等式写成左边为Ax+By+C(A0,若A=0时,需要B0)右边是0的形式,然后,根据不等号就可以准确判断二元一次不等式表示的平面区域;若

1. Accurately determine the planar area represented by the binary inequalities The planar area represented by the binary inequalities is a half coordinate plane. The boundary line is the corresponding straight line corresponding to the binary primary equation. When judging, the inequality can be written as the left Ax+By+C (A0, if A=0, B0 is needed) The right side is in the form of 0. Then, according to the inequality sign, the planar area represented by the binary inequalities can be accurately determined;