1 . 下列结论中正确的个数是( )
①命题“有些平行四边形是矩形”是存在量词命题;
②命题“
”是全称量词命题;
③命题“
”的否定为“
”;
④命题“
”是真命题;
①命题“有些平行四边形是矩形”是存在量词命题;
②命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218fb85ecfba9a607322e655b8c881bd.png)
③命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea4e2b7c2497171d1e67baafdcb8cc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843c90fc714cde532f3f9c74a97ce520.png)
④命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a0b7ac8de9b82840844ec88fbd0651.png)
A.0 | B.1 | C.2 | D.3 |
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解题方法
2 . 设双曲线
(
)的虚轴长为2,焦距为
,则其渐近线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 如图是一座抛物线型拱桥,当桥洞内水面宽
时,拱顶距离水面
,当水面上升
后,桥洞内水面宽为________
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1e0bd4fe8afb14b572852121cef83d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7854968bbf6576a1fd9926ee0d4d63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71a41641aa0d0e45a3c03d3d2c1196b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/59f4b5a0-7bff-4f2b-9684-99e6b50524b6.png?resizew=185)
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解题方法
4 . 如图,在棱长为2的正方体
中,
为
内的任意一点(含边界),则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/6701e148-7d5c-4f92-b9ad-cc4599b43a70.png?resizew=165)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de60f6ffd5ab327d4cfe32d26d95da70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/6701e148-7d5c-4f92-b9ad-cc4599b43a70.png?resizew=165)
A.三棱锥![]() |
B.点![]() ![]() ![]() |
C.向量![]() ![]() ![]() |
D.若线段![]() ![]() ![]() ![]() |
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名校
解题方法
5 . 已知双曲线
(
),以双曲线C的右顶点A为圆心,b为半径作圆A,圆A与双曲线C的一条渐近线交于M,N两点,若
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c2e64358e0ec7aa142c336d970306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3181e58f09e9fec4e43e422b82831b7.png)
A.![]() | B.![]() | C.![]() | D.2 |
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2024-02-23更新
|
804次组卷
|
3卷引用:广西壮族自治区三新学术联盟2023-2024学年高二上学期期末教学质量检测数学试题
解题方法
6 . 下列说法正确的是( )
A.椭圆![]() |
B.抛物线![]() ![]() |
C.等轴双曲线的离心率是![]() |
D.![]() |
您最近一年使用:0次
7 . 已知直线
经过椭圆
的左焦点
,且与椭圆
相交于
,
两点,
为椭圆的右焦点,
的周长为8,则此椭圆的短轴长为__________ ;弦长![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3d627f5fbd04271389d503942d233.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4690597bc0883f8932494c135a11433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5585a42c8f07ad90b94ace9db3d78994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3d627f5fbd04271389d503942d233.png)
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解题方法
8 . 已知抛物线
的焦点为
,准线
与
轴的交点为
,点
在抛物线上,且
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab94908863cfec2df9a9f14413ec469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21bab3935c404fe6f815f750e153dfae.png)
A.![]() | B.![]() | C.1 | D.2 |
您最近一年使用:0次
解题方法
9 . 如图,在四棱锥
中,
底面
,底面
是直角梯形,
,
,
点在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/152e4b02-5d84-43bb-87aa-aa67046eb860.png?resizew=154)
(1)求证,平面
平面
;
(2)若直线
与平面
所成的角为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ff6d7dd48b57f03d82d2c522ee9b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b4dda2be941a16fdfe67ac9aa90298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ab1959f7fa560977ffb9fb0e11bb2c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/152e4b02-5d84-43bb-87aa-aa67046eb860.png?resizew=154)
(1)求证,平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8981acad5791c9037b86779e4d8323.png)
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解题方法
10 . 如图,在正方体
中,
为平面
的中心.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/1ee695fe-0aca-4c2d-8ef3-c50b6aed425f.png?resizew=159)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa7168302e524813426a0fa494c86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/1ee695fe-0aca-4c2d-8ef3-c50b6aed425f.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d28074ee5af1441242700388b3a9c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
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