1 . 若方程
有实数根,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f2fb28df5703eb148d4f49c355df04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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13-14高二上·黑龙江双鸭山·期末
名校
2 . 已知双曲线
与抛物线
有一个公共的焦点
,且两曲线的一个交点为
,若
,则双曲线的渐近线方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c74febecdeab2c76afebc30f82212fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c7e6cb9ba83495a45d0b4f4306bbb5.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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2016-12-03更新
|
918次组卷
|
5卷引用:重庆市蜀都中学2020-2021学年高二上学期12月月考数学试题
重庆市蜀都中学2020-2021学年高二上学期12月月考数学试题(已下线)2012-2013学年黑龙江省集贤县第一中学高二上学期期末理科数学试卷(已下线)2012-2013学年山东省济宁市高二上学期期末理科数学2014-2015学年甘肃省秦安县二中高二上学期第四次月考理科数学试卷陕西省西安市铁一中学2020-2021学年高二上学期期末理科数学试题
解题方法
3 . 已知集合
,
.
(1)若
时,求
,
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d0781822db5ca5ff921afa23385cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f4273e6ec63fb722a37f14428572e63.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711b21672fd907c5c92fee1d649e7003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48281085cfebc5f92af7402f3a5c87f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 如图,侧棱垂直于底面的三棱柱
中,
分别是
,
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/4af1d4dc-59bd-4c5c-94db-dafe2b484a03.png?resizew=151)
(1)证明:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b55b97bd8f8350321040a0445c0c5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/4af1d4dc-59bd-4c5c-94db-dafe2b484a03.png?resizew=151)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547a4b438e2e6687c7cd55ea08bbaae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4557cba52f576f9e6d67616cbf7a85e8.png)
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2017-03-10更新
|
1057次组卷
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3卷引用:重庆市蜀都中学2020-2021学年高二上学期12月月考数学试题
5 . 设函数
(
为实常数)为奇函数,函数
.当
时,
对所有的
及
恒成立,则实数
的取值范围________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec1e11b44eed8dc33807dfb77d9fc61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc7ac8e01844b0c911d76ee8cc0b7255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fadd2e6f0aa16c2c466c904474ffc79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2349e1b9941fb863dae369286d6dbfc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc70276e8bba4f3a519be50442f0f21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cdb99d5aa8c0d2202f41556c1d9970a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2016-12-04更新
|
706次组卷
|
2卷引用:重庆市蜀都中学2020-2021学年高二上学期11月月考数学试题
11-12高二上·山西忻州·阶段练习
6 . 已知: 函数
且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
(1)求
的定义域;
(2)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde526055cceba920530bdc9637c1ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
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7 . 直线l:x+y+1=0的倾斜角为
A.45° | B.135° | C.1 | D.﹣1 |
您最近一年使用:0次
2016-12-04更新
|
224次组卷
|
2卷引用:重庆市蜀都中学2020-2021学年高二上学期12月月考数学试题
10-11高一·山东济南·开学考试
名校
8 . 已知直线a、b和平面α、β,且b⊥α,那么( )
A.b⊥a⇒a∥α | B.b不在β内⇒α∩β=∅ |
C.a∥α⇒b⊥a | D.α⊥β⇒b∥β |
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