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1 . 若“
,
”为假命题,则
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9e7e20fa4c1212aeefbc1647381682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c69303bd9eccb3ccb55c9e4cd03a8a3.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26f90449eb18956c19071a02ddcd51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c69303bd9eccb3ccb55c9e4cd03a8a3.png)
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3 . 下列
的取值中能使函数
在区间
上单调递减的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884deb79b062a7abfa916dad2ab2494f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bea12f2c2e9e59e73b5ee0566dff9a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-11-02更新
|
1040次组卷
|
2卷引用:重庆市西南大学附属中学校2021-2022学年高一上学期第二次定时训练数学试题
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解题方法
4 . 在下列四组函数中,
与
表示同一函数的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
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2021-11-02更新
|
501次组卷
|
2卷引用:重庆市西南大学附属中学校2021-2022学年高一上学期第二次定时训练数学试题
名校
解题方法
5 . 已知
,
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd98ce07e05c58d83a48d90dfcb28fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5aeb3d26cd665d59d613763d16907a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 给定函数
,
,
.用
表示
,
中的较小者,记为
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd5d14d974a12d88a114e79fee1b862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a68abe3d6039479b9ea60126970aa69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb1ed40a8f67e93401e544284ceaaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d860f9af2997d84a90c64bfcb6085c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb1ed40a8f67e93401e544284ceaaf2.png)
A.![]() | B.1 | C.0 | D.2 |
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2021-11-02更新
|
578次组卷
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3卷引用:重庆市西南大学附属中学校2021-2022学年高一上学期第二次定时训练数学试题
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7 . 下列函数中,值域为
的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-11-02更新
|
604次组卷
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2卷引用:重庆市西南大学附属中学校2021-2022学年高一上学期第二次定时训练数学试题
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8 . 已知命题
:
,
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21da825c05d5b169a5e7748f70602b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2021-11-02更新
|
267次组卷
|
3卷引用:重庆市西南大学附属中学校2021-2022学年高一上学期第二次定时训练数学试题
名校
9 . 如图,在四棱锥中
,底面
是等腰梯形,
,
与
交点为
,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/ef7a38a8-cd3e-4308-ab49-49a01e436771.png?resizew=172)
(1)证明:
平面
;
(2)若
且
,
,则在线段
上是否存在一点
﹐使得二面角
的余弦值为
,若存在,求出点
的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7383ab3dc2ae9dce9b6ff0f8c4fb26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/ef7a38a8-cd3e-4308-ab49-49a01e436771.png?resizew=172)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77bf664aa516494b813f8f71cfdc8e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764829cc2c763b6aca0665aa143e304e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a571a8a9e4b838f8e9297bbba7f9d121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02fce31bb294c5a79b4f4b8fe765312e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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2021-10-22更新
|
495次组卷
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3卷引用:重庆市朝阳中学2021-2022学年高二上学期期中数学试题
名校
解题方法
10 . 在等腰梯形
中,
,E为
的中点,将
与
分别沿
,
向上折起,使A,B重合为点F,则三棱锥
的外接球的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468d5910a66c0b0025b8061cfbd74e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2657e02314469ad2b13d31dce41b4343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad15911cb2cd8730c08f20e80644ccf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-10-21更新
|
854次组卷
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3卷引用:重庆市朝阳中学2021-2022学年高二上学期期中数学试题
重庆市朝阳中学2021-2022学年高二上学期期中数学试题天津市第四十七中学2021-2022学年高三上学期第一次月考数学试题(已下线)考点30 组合体的“切”“接”综合问题-备战2022年高考数学典型试题解读与变式