名校
解题方法
1 . 已知点
(2,﹣3),
(3,2),直线
与线段
相交,则直线
过定点
的坐标为______________ ,实数
的取值范围是_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881d3d9e815077f1dc7d16888be994ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知实数x,y满足
.
(1)
的取值范围;
(2)
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9acb78fa3cccf4cba58c34534296772.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f63a0d23ac4ead9b77545285cbd36e4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de10c0694bdfd1130a1797a3cc7de46e.png)
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名校
3 . 已知实数
满足
,若
的最大值为
,最小值为
,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122f7d46e51bec46e7eb5f3fc235ee92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baaa79c2c101deb8595d3b296ad2b73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb4f22294f31a9a5cd246126b28493a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee343ed993012ac99860b11bb8cee933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-01-11更新
|
195次组卷
|
5卷引用:2011年辽宁省瓦房店市五校高二上学期竞赛数学理卷
名校
4 . 已知集合
,
,则交集
所表示的图形面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb79954bbbff5efc12ddec1bc43ce738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6898c74890fb656a16d41daf68c50a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81919684bc4047d376c7e57dc6c8f1c.png)
A.1 | B.2 | C.4 | D.8 |
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名校
解题方法
5 . 已知实数
满足条件
,且
,则
的最小值是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abf0d2c1b2ab89216889ba92a7a92b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff626b7fdcdec8d1b2374b80b6a68d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://img.xkw.com/dksih/QBM/2017/5/9/1683307283267584/1689604707753984/STEM/6e2d8b72488740809d6af6f9d88304f6.png?resizew=3)
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名校
6 . 本市某玩具生产公司根据市场调查分析,决定调整产品生产方案,准备每天生产
,
,
三种玩具共100个,且
种玩具至少生产20个,每天生产时间不超过10小时,已知生产这些玩具每个所需工时(分钟)和所获利润如表:
(Ⅰ)用每天生产
种玩具个数
与
种玩具
表示每天的利润
(元);
(Ⅱ)怎样分配生产任务才能使每天的利润最大,最大利润是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
玩具名称 | |||
工时(分钟) | 5 | 7 | 4 |
利润(元) | 5 | 6 | 3 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(Ⅱ)怎样分配生产任务才能使每天的利润最大,最大利润是多少?
您最近一年使用:0次
2017-05-18更新
|
825次组卷
|
3卷引用:辽宁省普兰店市第一中学2018-2019学年高二上学期期中考试数学试题
7 . 设变量
满足约束条件
,且目标函数
的最小值为
,则实数
等于_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e062e12d63cdf48dc368abeca0c8780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7620b0278bcb316da6e5dafaa18ea268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a94acdfb41489d5694b5a64b9e99754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . 如果实数
满足条件
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f928db4234a95ace63b91ba87709b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2032aa352f4c60d464dfe8dfb4e3580e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d508163e6dfb84305998f3f231059b8c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
348次组卷
|
3卷引用:2016-2017年辽宁盘锦高级中学高二理10月月考数学试卷
9 . 已知集合
,设集合
,则集合
所对应的平面区域的面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a826fc528c03c385828d080081b9b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f3fc042263949cc8a18f61ecc7086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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10 . 向量
,
为坐标原点,动点
满足
,则点
构成图形的面积为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68653fdc5914824f070c4f04eda5c19b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b5ec4981bc027e708db205086e5a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28468af14c93b04d44e155e820fb65e.png)
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