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1 . 设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c203103966642406ab889fcdc361ebdc.png)
(1)当
时,求函数
在
上的值域;
(2)若不论
取何值,
对任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c203103966642406ab889fcdc361ebdc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad72caf871eff7b7eceeadd431770db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143da45c57837c5298e7a8ccab18d1c6.png)
(2)若不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4624a648f30189a10c8b6683b190ce5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4158ad3810f061c4a230fb8262789f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-10-12更新
|
285次组卷
|
5卷引用:宁夏回族自治区育才中学2018-2019学年高二下学期期末数学试题
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2 . 已知集合
,
,则
的元素个数为______ 个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0a9b3d669e36916a5db9c2bdd82588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8817b9550ea4ceeb77f2fa1a29b40346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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3 . 如图,在四棱锥
中,底面
是直角梯形,侧棱
底面
,
垂直于
和
,
,
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/4a4a3d38-0437-4550-8c24-90cce5f4cdff.png?resizew=133)
(1)求证:
∥平面
;
(2)设点
是直线
上的动点,
与平面
所成的角为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d11dd7422f4703763abc23d83c7584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3af40d9bd45697baca136ab99da182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/4a4a3d38-0437-4550-8c24-90cce5f4cdff.png?resizew=133)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
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4 . 集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bee935175318979f5b0bdda6aa8482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4243f4d14678405004921a740c78fb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
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2020-01-05更新
|
188次组卷
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3卷引用:宁夏银川唐徕回民中学2021-2022学年高一上学期期末考试数学试题
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5 . 设集合
,则下列关系式正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348de34f341f272d1e1f9ae141975b9a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-12-27更新
|
219次组卷
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3卷引用:2020届宁夏石嘴山市第三中学高三上学期期末考试数学(文)试题
6 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20889682a2ce4c6efab561457cdec3f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759697f154c8ea85a2debbf801da26d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565e930eaddafa9b6be8bc1dacba991b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2014·山东日照·一模
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7 . 设
是定义在
上的偶函数,且
,当
时
,若在区间
内,函数
,
恰有一个零点,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8127a4b0b81fdeefcfb9bdc2c7dd05d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626d8e8bba19df463a1b6f4e4d2377cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe685c4cae316a0fec8f1ef7d67f9c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6421ffe4655a7bc8b6e46ee93a96b0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47157f948dda73b7bd58d1a56b5a14c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b93abe2a497b7ef3cb8c1b9de8492e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-03更新
|
2838次组卷
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3卷引用:【全国百强校】宁夏石嘴山市第三中学2019届高三上学期期末考试数学(文)试题
【全国百强校】宁夏石嘴山市第三中学2019届高三上学期期末考试数学(文)试题(已下线)2014届山东省日照市高三5月统一质量检测考试理科数学试卷【全国百强校】河北省唐山一中2018届高三下学期强化提升考试(一)数学(文)试题
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解题方法
8 . 已知集合
,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc44e0535be21731d4a443c4046e5ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e33cac3ae96733190b786adc9e8d9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8e8f6d2db6420933a4ac7610d4e567.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36355ddeebaa641247a6c073c3cd5dd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b30aa421b985bfc38e834159aab58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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