1 . 利用图示说明不等式
成立,并画出不等式中等号成立时相应的图示.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b38cc10e215e0ee74945e3ea07cedda.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/feb5f82f-9749-4f07-a06b-ce970b2c9707.png?resizew=133)
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名校
解题方法
2 . 设x、y满足约束条件![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea454e03a2633983c6cd7fe0ecd00f7.png)
(1)画出不等式组表示的平面区域,并求该平面区域的面积;
(2)若目标函数z=ax+by(a>0,b>0)的最大值为4,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea454e03a2633983c6cd7fe0ecd00f7.png)
(1)画出不等式组表示的平面区域,并求该平面区域的面积;
(2)若目标函数z=ax+by(a>0,b>0)的最大值为4,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78410e319c161047753e7b5c127aaba3.png)
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2020-09-09更新
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391次组卷
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4卷引用:【全国百强校】安徽省淮南市第二中学2017-2018学年高一下学期期末考试数学试题
【全国百强校】安徽省淮南市第二中学2017-2018学年高一下学期期末考试数学试题(已下线)专题3.3+二元一次不等式组及简单线性规划问题(基础练)-2020-2021学年高二数学十分钟同步课堂专练(苏教版必修5)(已下线)第3章+不等式(能力提升)-2020-2021学年高二数学单元测试定心卷(苏教版必修5)吉林省吉林市吉化一中2019-2020学年高一下学期期末(文科)数学试题
3 . 选修4-5:不等式选讲
已知函数
.
(1)在图的坐标系中画出
的图象;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/a7f9bc58-6fbd-437e-b1a3-9a03ef45001a.png?resizew=221)
(2)若
的最小值为
,当正数
,
满足
时,求
的最小值.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9527ed65d2740d81ea949515c7ebd954.png)
(1)在图的坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/a7f9bc58-6fbd-437e-b1a3-9a03ef45001a.png?resizew=221)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8acc7885b7af2fccf3fb1056066203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219ba6c8a1b54598db1a78cab28d9d30.png)
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2011高一·安徽蚌埠·学业考试
4 . 已知函数
.
(1)在图的坐标系中画出
的图象;
![](https://img.xkw.com/dksih/QBM/2011/5/20/1570213716729856/1570213721702400/STEM/62f5b2cd20ce42bab46f5660d4356ed3.png?resizew=259)
(2)若
的最小值为
,当正数
,
满足
时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9527ed65d2740d81ea949515c7ebd954.png)
(1)在图的坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://img.xkw.com/dksih/QBM/2011/5/20/1570213716729856/1570213721702400/STEM/62f5b2cd20ce42bab46f5660d4356ed3.png?resizew=259)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8acc7885b7af2fccf3fb1056066203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219ba6c8a1b54598db1a78cab28d9d30.png)
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