1 . 在正三棱锥
中,
是
的中心,
,则
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a1bf1781683d2bff001a1a5f6fdfd1.png)
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解题方法
2 . 已知抛物线
的焦点F,点
,线段MF的三等分点N在曲线C上,则点N到焦点的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353fb482ccb021bb00712a69accd5617.png)
A.![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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名校
3 . 已知椭圆
的左、右焦点分别为
,过椭圆
上一点
和原点
作直线
交圆
于
两点,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25648f22f78ae190318c37b1b41a37c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fa27fccbb61045fb30f50c7b271082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
A.椭圆![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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4 . 如图,正方体
的棱长为1,线段
上有两个动点E,F,且
,则下列结论中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e438a162ed349f7f25333e8f6c044e6d.png)
A.当点E运动时,![]() |
B.当E向![]() ![]() |
C.二面角![]() ![]() |
D.三棱锥![]() |
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2023-11-23更新
|
491次组卷
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4卷引用:辽宁省鞍山市2023-2024学年高二上学期期中数学试题
名校
解题方法
5 . 已知椭圆
的左、右焦点分别为
,直线
与椭圆交于点M,
,则椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ca6dc0ccf8fbdfbf5e609c12380f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6520d489c85fa646be898578e2f88b05.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-23更新
|
920次组卷
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4卷引用:辽宁省鞍山市2023-2024学年高二上学期期中数学试题
辽宁省鞍山市2023-2024学年高二上学期期中数学试题福建省厦门市海沧实验中学2023-2024学年高二上学期期中数学试题(已下线)专题12 椭圆的定义及其应用+焦点三角形(期末选择题12)-2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)新疆乌鲁木齐市六校联考2023-2024学年高二上学期期末考试数学试题
名校
解题方法
6 . 已知抛物线
的焦点为
,点
在
上,且
的最小值为1.
(1)求
的方程;
(2)过点
的直线与
相交于
,
两点,过点
的直线与
相交于
,
两点,且
,
不重合,判断直线
是否过定点.若是,求出该定点;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e63d3f6fe96b1f26cf87eba3165ee1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c9f195bc306a5ff74ad29bbd3a6ed1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb8f8f39e1d3eea420b0de792d20f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ddda95c7c302aa246077dc7f0283e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
2023-11-23更新
|
597次组卷
|
6卷引用:辽宁省葫芦岛市协作校2023-2024学年高二上学期第二次考试数学试题
名校
解题方法
7 . 已知“
”为假命题,则实数
的值可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e3895f59202f30f7fbf7541eb82220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.0 | B.![]() | C.![]() | D.1 |
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8 . 如图,在正四棱台
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/e9d69856-04dd-48c7-839d-170db58ca0f7.png?resizew=202)
(1)证明:
平面
;
(2)若正四棱台
的侧棱长为
,过直线
的平面
与
平行,求平面
与平面
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc47e8015e70a20456c25f742d54cae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/e9d69856-04dd-48c7-839d-170db58ca0f7.png?resizew=202)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f332eb13e2379aeedb236434947a8f.png)
(2)若正四棱台
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20838e72faf737614d76fcee82ab6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
您最近一年使用:0次
2023-11-19更新
|
103次组卷
|
2卷引用:辽宁省高级中学2023-2024学年高二上学期期中数学试题
9 . 如图①,在等腰直角三角形
中,
分别是
上的点,且满足
.将
沿
折起,得到如图②所示的四棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/77528052-9f87-421a-895f-d4872c3c7efd.png?resizew=304)
(1)设平面
平面
,证明:
;
(2)若
垂直
于点
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859d473965ba22c3250544d24b2e47ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0137c721b8d4ea6dca8b7d9761134726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ac36c7ac328d903073739b8dcc0531.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/77528052-9f87-421a-895f-d4872c3c7efd.png?resizew=304)
(1)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8dc5f056a7b84dc39d5ce46e615e91d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304d6b84040aa3ec0078de3451f02db7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0159b0e20b17cb9b858f89b7f49e439.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ba7fd4fdc34d2c9865234fd57f0c07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4739ad948445af72d585fe29c745929b.png)
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2023-11-19更新
|
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|
3卷引用:辽宁省高级中学2023-2024学年高二上学期期中数学试题
10 . 已知直线
的方向向量与直线
的方向向量共线且过点
;
(1)求
的方程;
(2)若
与抛物线
交于点
为坐标原点,设直线
,直线
的斜率分别是
;求
及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089243ad31b799d65b9e86ec2a116188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f739a29d4fbb88ba1337e8456ef1f8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876856cdb3900b117f280615c185d347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad608ff2250d3f93f509ef52fff7611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb8956ebcde7cf0f1011a2fc1888e15.png)
您最近一年使用:0次
2023-11-19更新
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731次组卷
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3卷引用:辽宁省高级中学2023-2024学年高二上学期期中数学试题