若x,y满足约束条件
,则z=x﹣2y的最大值为_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aecd41d5d28636d4fa9e65dc515b567.png)
更新时间:2020-03-17 11:53:11
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【知识点】 根据线性规划求最值或范围解读
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