解题方法
1 . 若
满足约束条件
,则
的最大值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edac77829e7aec29f8980f577959098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e85ebe9fc1ba3d176a54479e8997f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aba3f06a47c86b096f284cde5270594.png)
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2 . 已知点
,点
满足线性约束条件
,
为坐标原点,那
在
方向上的投影的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5132a350f40fa8203f9a1a64170f24e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadb5dfbf4518394b40e7713b4f8943b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec64476aaca08de0808afda3618109c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
您最近一年使用:0次
3 . 观察下列事实:平面坐标系中,
所围成的区域面积为2,
所围成的区域面积为8,则
所围成的区域面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4edf2e906d4bbfdb6d02e13597236ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fc33e98b55a00b2f208485f0c520f3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490a38b99937504e21752850d647cfd0.png)
您最近一年使用:0次
4 . 若实数
,
满足约束条件
则
的最大值为______ .
![](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/df95e95697778ce394363a4f6e3d6342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7c99486743e17633d086d868f0680c.png)
您最近一年使用:0次
5 . [2019·宜昌一中]已知函数
,若
,
都是从区间
内任取的实数,则不等式
成立的概率是_
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52b42634391d41c3a36e9393ffd73fe.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/2fab11f38ab8593932082ec4d9c8c91f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5605609963dca4fb042b439dc4bad83e.png)
您最近一年使用:0次
2018-07-20更新
|
536次组卷
|
2卷引用:【全国百强校】湖北省宜昌市一中2018届高三考前适应性训练2数学(理)试题
6 . 在平面直角坐标系中,求不等式组
表示的平面区域的面积为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6f9fd29cede74ad7c0146a935a3033.png)
您最近一年使用:0次
7 . 设平面点集
,则
所表示的平面图形的面积为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebee7105e33aac4011ca7bce2390a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
您最近一年使用:0次
8 . 如果实数x、y满足条件
,那么2x+y的最大值为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9699e7a724e113ee73bd5eec1e838c6.png)
您最近一年使用:0次
9 . 点
和点
关于点
的对称点
都在直线
的同侧,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fa38ac3719a6ccb3eb73ccadff69bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a11cbd8b8638d6d5e9343e38b7cf37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-07-09更新
|
295次组卷
|
3卷引用:湖北省部分重点中学2016-2017学年高一下学期期末考试数学(文)试题
10 . 已知实数
满足
,则
的最大值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f1144e5583d4b2668f0d1c6ba221b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
您最近一年使用:0次
2017-02-22更新
|
819次组卷
|
2卷引用:【市级联考】湖北省钟祥市2019届高三高考第一次模拟考试理科数学试题