解题方法
1 . 已知实数
,
满足条件不等式组
,则目标函数
的最大值为________ ;若直线
平分不等式组表示的平面区域的图形面积,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2357f2f78b5b0e3b1758389043f1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80789d0745eb0019ad7caa9737251a94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ebce8b2a915356ed39f36c5bad2ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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2 . 已知
,
,则
围成的区域的面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da932f36f20683057d8559f41c27f11b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ae470980d6e3b53c65b9d42d1f011c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b85e841a7a9e8fd7638235f5c3694ca.png)
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3 . 已知实数x,y满足约束条件
,若可行域表示的平面区域为三角形,则实数k的取值范围为_____________ ,当
时
的最大值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d1de051d6c7e3f954bcf2712446071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a2a34b4317deffa40ba34e269c2b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4489516aca67a6afe53fac2f1477f76.png)
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