名校
1 . 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)
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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
解题方法
2 . 设实数
,
满足约束条件
,则
的最小值为__________ .
![](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/c2631a0f364ab183f049e8d1a89232e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a141f366c1a6869b466071888291fb6f.png)
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2017-06-15更新
|
300次组卷
|
2卷引用:辽宁省锦州市2017届高三质量检测(二)数学(文)试题
解题方法
3 . 在区间
中随机地取出两个数,则两数之和小于1的概率是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094cba781181aeb90752170e9ba6c94.png)
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2017-05-26更新
|
467次组卷
|
2卷引用:辽宁省沈阳市2017届高三第三次模拟考试数学(理)试题
名校
解题方法
4 . 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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解题方法
5 . 由约束条件
所确定的可行域
能被半径为
的圆面完全覆盖,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399fd36ef0e54e32dae1eeead12c01c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2017-03-30更新
|
827次组卷
|
3卷引用:2017届辽宁省盘锦市高级中学高三下学期第二次高考模拟考试数学(理)试卷
6 . 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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7 . 不等式组
表示的平面区域为
,若对数函数
上存在区域
上的点,则实数
的取值范围是_________ .
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572626200109056/1572626205868032/STEM/1b9cce819d854341b0a7492f0806ca6f.png?resizew=93)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572626200109056/1572626205868032/STEM/5aa08f9c33c643abb7c2f4de080610e7.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572626200109056/1572626205868032/STEM/8fd9282e817c422fab909ebdb47a67bd.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572626200109056/1572626205868032/STEM/5aa08f9c33c643abb7c2f4de080610e7.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572626200109056/1572626205868032/STEM/194ed4b0abe64307bb442318f7986aab.png?resizew=13)
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8 . 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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9 . 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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2012·宁夏银川·一模
10 . .已知不等式组
表示的平面区域
的面积为
,点
,则
的最大值为_________ .
![](https://img.xkw.com/dksih/QBM/2015/9/25/1572243757826048/1572243763601408/STEM/3e9126b94767431eb220c063846bfe9a.png?resizew=56)
![](https://img.xkw.com/dksih/QBM/2015/9/25/1572243757826048/1572243763601408/STEM/6c1c7afb599e4797aa5d7530fc25ce8b.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2015/9/25/1572243757826048/1572243763601408/STEM/51d8c3e31c6a4c1194940e8bbd044f85.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2015/9/25/1572243757826048/1572243763601408/STEM/34c20424a9e64f24931c8bbf9ac0cb39.png?resizew=76)
![](https://img.xkw.com/dksih/QBM/2015/9/25/1572243757826048/1572243763601408/STEM/ed342bfbbef7452981ed81a70648f1f7.png?resizew=71)
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