名校
1 . 若原点和点
在直线
的同侧,则
的取值范围是________ (用集合表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/befb1060ef61ef237f2dab08ad479c62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc209d7e24ff25c3ca4d7894353562fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-03-06更新
|
419次组卷
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4卷引用:河北省衡水市第十三中学2019届高三质检(四)文科数学试题
河北省衡水市第十三中学2019届高三质检(四)文科数学试题(已下线)狂刷29 二元一次不等式(组)及简单的线性规划问题-学易试题君之小题狂刷2020年高考数学(理)(已下线)专题06 等式与不等式-【备战高考】2021年高三数学高考复习刷题宝典(填空题专练)甘肃省张掖市山丹县第一中学2019-2020学年高二上学期期中考试数学(理)试题
名校
2 . 已知实数
满足
若
恒成立,那么
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edac77829e7aec29f8980f577959098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089449270a25a4a1b82cee86f1f16150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70e6721409106ae3b159fee21d88a3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-01-01更新
|
1351次组卷
|
8卷引用:【市级联考】河北省衡水市2019届高三下学期第三次质量检测数学(理)试题
3 . 由不等式组
,组成的区域为
,作
关于直线
的对称区域
,点
和点
分别为区域
和
内的任一点,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289b8d5afbe613507ebe59253790e236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bb89aec41e32d27b5f0914c494dead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d701dea6a02d6c0705634c30e64a88d.png)
![](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/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d701dea6a02d6c0705634c30e64a88d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82358b724051b032c7ec734a226ae84.png)
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解题方法
4 . 已知
是区间
上的任意实数,直线
与不等式组
表示的平面区域总有公共点,则直线
的倾斜角
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94776d87380dd907b6a8a5b9079fc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e28d5de51aae4c5540695bd4dbf6f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c08b41ce2e321311a76de7f3eca0c747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4151a95b152953eb529b054cc523c886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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2018-05-12更新
|
1049次组卷
|
2卷引用:河北省衡水中学2018届高三第十七次模拟考试数学(文)试题
解题方法
5 . 已知
表示的区域为
,不等式组
表示的区域为
,其中
,记
与
的公共区域为
,且
的面积
为
,圆
内切于区域
的边界,则椭圆
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fda3ce570e33bc7fe406e89867c59da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71aabad9a6bb7e4efd1da0be89fae823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72585c5c8c13726b73d0a20f5d046146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f526a714205cd0590fdc7d12b377732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
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解题方法
6 . 若实数
满足不等式组
,
,
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad759f19a8326257461e0ed2bb9c6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9d1ff6e2a647e0cba761bad70d10c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c5348426012bbf262c595a2a4c6085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61a65af5b7ab2400eec5499e9a81565.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-02-06更新
|
608次组卷
|
2卷引用:河北省衡水中学2018届高三上学期九模考试数学(文)试题
名校
解题方法
7 . 已知
,
满足约束条件
,则目标函数
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/6fa339e542f3992e2f257e5b99f06a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a018051cd613d31e1afed2b01d4b31c8.png)
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2018-01-20更新
|
800次组卷
|
2卷引用:河北衡水中学金卷2018届高三高考模拟一理科数学试题
解题方法
8 . 设实数
,
满足
则
的取值范围是__________ .
![](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/a25c83b57146cfb3bf98c748e3e50e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a328919b62bf2526fa8b6cca0d1588d7.png)
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2017-12-07更新
|
581次组卷
|
2卷引用:河北省衡水市2018届高三高考模拟联考理数试题
名校
解题方法
9 . 若变量
满足不等式组
,且
的最大值为7,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d7b7116c8826f1db2a1516319d5332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ea614559b4ad922c275408102e7abe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.1 | B.![]() | C.![]() | D.![]() |
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2017-05-04更新
|
798次组卷
|
8卷引用:河北省武邑中学2017届高三下学期一模考试数学(理)试题
名校
解题方法
10 . 设
,若关于
,
的不等式组
表示的可行域与圆
存在公共点,则
的最大值的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.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/f9c2b879b8457cbee0514ae8ca5a34d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb6162d124d26e63811a361ff63e127f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7c99486743e17633d086d868f0680c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-04-17更新
|
1067次组卷
|
4卷引用:河北省衡水中学2018届高三上学期二调考试数学(理)试题