1 . 当一个非空数集G满足“如果
,则
,
,
,且
时,
”时,我们称G就是一个数域,以下关于数域的命题:①0和1都是任何数域的元素;②若数域G有非零元素,则
;③任何一个有限数域的元素个数必为奇数;④有理数集是一个数域;⑤偶数集是一个数域,其中正确的命题有______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9cbad1e8b405feac6e8fe403f024b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e9939f368214b0d148e9609eba14a6.png)
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2 . 若函数
有四个不同的零点,则
的取值范围是_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffceaeff184ee997dd28f32721d4d4ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
3 . 如图,在
中,
,
是斜边
的中点,将
沿直线
翻折,若在翻折过程中存在某个位置,使得
,则
的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb3944427f17f33d72fdc2277390be94.png)
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![](https://img.xkw.com/dksih/QBM/2020/12/29/2624712283963392/2625505506770944/STEM/3aafcbe5-b968-4049-90bd-35afee5b0583.png?resizew=521)
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解题方法
4 . 已知不等式
恒成立,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ae16692b127c00aab5f31450884d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4521ab02bd2ea41ffd8557a5a0be8d05.png)
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19-20高一·浙江·期末
解题方法
5 . 在直角梯形
中,
,
,
,将
沿
向上翻折到
、使点
在平面
上的射影落在线段
上(不含端点),设异面直线
与
所成的角的大小为
,二面角
的大小为
,直线
与平面
所成的确的大小为
,二面角
的大小为
,有下列命题:①
;②
;③
.则其中正确的命题序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
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名校
6 . 已知平面内非零向量
,
,
,满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccf5af2912b02864d4c3981225fad8b.png)
,
,
,若
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8b9855e198e41065f4408a18e6531b.png)
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2020-12-19更新
|
1436次组卷
|
6卷引用:2020学年浙江省嘉兴市高中教师学科专业知识考试数学试题
2020学年浙江省嘉兴市高中教师学科专业知识考试数学试题(已下线)【新东方】高中数学20210429—012【2021】【高一下】浙江省杭州市学军中学(紫金港学区)2020-2021学年高一下学期期中数学试题(已下线)考点44 圆与方程-备战2021年高考数学经典小题考前必刷(新高考地区专用)(已下线)专题07 奔驰定理与四心的相关运算及构造圆解决向量问题-【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)(已下线)第八章 解析几何 专题5 解析几何中动态最值问题 一题多解
7 . 已知函数
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9183df9b3f276abc8a9b279ea35dc7.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce020353e4314fe1e1cfe2d84b91221.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41695a4b39b662183ebc8092c06bf034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b75b95500ecdd45377847255bcd5302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d661ea1afb474d15f37b8a2378d764ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9183df9b3f276abc8a9b279ea35dc7.png)
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解题方法
8 . 定义在R上的函数
具有性质:(1)
(2)当
时,
单调增,则不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd384d86840b7b158af41f56fe29c7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ba3d0a54b728f66e6495b5d4771583.png)
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2020-12-18更新
|
1376次组卷
|
4卷引用:浙江省温州市苍南县、龙港市2020-2021学年高一上学期“姜立夫杯”数学竞赛试题
浙江省温州市苍南县、龙港市2020-2021学年高一上学期“姜立夫杯”数学竞赛试题(已下线)第三章 函数概念与性质(提分小卷)-【单元测试】2021-2022学年高一数学尖子生选拔卷(人教A版2019必修第一册)(已下线)第04讲 函数的奇偶性(教师版)-【帮课堂】2021-2022学年高一数学同步精品讲义(苏教版2019必修第一册)(已下线)第04讲 函数的基本性质——奇偶性-【帮课堂】2021-2022学年高一数学同步精品讲义(人教A版2019必修第一册)
9 .
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae3954d413682c1c3752d00530eecfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3370a6c06740143356c0800f56c7a61c.png)
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10 . 已知平面向量
满足
,则
与
所成夹角的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635156f32ad6a65b2ec5f4c914e3ff8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bca35e52b8430246a1cf96e9e617cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb26a309572d9fe31950265dd86c57a9.png)
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2020-12-17更新
|
1522次组卷
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5卷引用:浙江省杭州高级中学钱江校区2020-2021学年高三上学期12月月考数学试题
浙江省杭州高级中学钱江校区2020-2021学年高三上学期12月月考数学试题(已下线)【新东方】420浙江省杭州市钱江职业高级中学2020-2021学年高三上学期12月月考数学试题(已下线)专题06 平面向量的模与夹角(讲)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(浙江专用)》(已下线)2020年高考浙江数学高考真题变式题17-22题