名校
1 . 已知命题
,
,则
为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a133fa8172d41c70c25d623f3dddd15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d42c4f98f9e78619572150cb82ed8b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知抛物线
的焦点为
,
为抛物线上异于顶点的一点,过点
作
垂直于准线,垂足为
,若
,且
的面积为
,则此抛物线的方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bcb1860a277da8189067a456877cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b929a31d169a811004f0ecd6b7984e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7dc603317eb90974c75efec9f02b1b.png)
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名校
3 . 若抛物线
上一点到焦点和抛物线的对称轴的距离分别是10和6,则
的值为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d3113c33d21b940f2fc864a79ca4b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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2019-09-24更新
|
256次组卷
|
2卷引用:山西省忻州市原平市范亭中学2018-2019学年高二下学期期末数学试题
名校
4 . 若集合
,
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e25c26af80fbe87e19b263a1e8d26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b4fd3624fdf14466626295da631517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b05cac8a8949fae95b195425ce890947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
A.充分非必要条件 | B.必要非充分条件 |
C.充要条件 | D.既非充分又不必要条件 |
您最近一年使用:0次
2019-11-15更新
|
1909次组卷
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12卷引用:2019年山西省忻州市静乐县高三下学期6月月考数学试题
2019年山西省忻州市静乐县高三下学期6月月考数学试题(已下线)2019高考热点题型和提分秘籍 【理数】专题2 命题及其关系、充分条件与必要条件( 题型专练)(已下线)2019高考热点题型和提分秘籍 【文数】专题2 命题及其关系、充分条件与必要条件 (题型专练)上海市建平中学2019-2020学年高一上学期期中数学试题(已下线)2019年上海市华东师范大学第二附属中学高三模拟(三模)数学试题(已下线)2019年上海市华东师范大学第二附属中学高三模拟数学试题黑龙江省双鸭山市第一中学2017-2018学年高二下学期开学考试数学(理)试题安徽省安庆市怀宁县第二中学2018-2019学年高三上学期第四次月考数学(文)试题山西省师院附中、师苑中学2020-2021学年高一上学期第一次月考数学试题河南省新乡市辉县市第一高级中学2020-2021学年高二下学期第一次阶段性考试数学(文)试题(已下线)考点53 不等式选讲-备战2022年高考数学(理)一轮复习考点帮广西陆川县中学2016-2017学年高二下学期知识竞赛数学(理)试题
名校
5 . 双曲线
的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b30352c43707c4e54b94ce5b61f2e6.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 如图,在四棱锥
中,底面
为平行四边形,
,
.且
底面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/8a94dcf4-e97a-4021-aa14-d3ada1380c18.png?resizew=226)
(1)证明:平面
平面
;
(2)若
为
的中点,且
,求二面角
的大小
![](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/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdfd547c5cb12488099645da9bce79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/8a94dcf4-e97a-4021-aa14-d3ada1380c18.png?resizew=226)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000204a310efd5b340dda949856fe953.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b4e098c6194f55462b24f552f5967.png)
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2019-05-05更新
|
437次组卷
|
3卷引用:山西省忻州市第一中学2018-2019学年高二下学期期中考试数学(理)试题
名校
7 . 以下说法错误的是
A.命题“若![]() ![]() ![]() ![]() |
B.“![]() ![]() |
C.若命题![]() ![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2019-04-28更新
|
1783次组卷
|
6卷引用:山西省忻州市原平市范亭中学2018-2019学年高二下学期期末数学试题
名校
8 . 已知椭圆
的离心率为
,其中左焦点
.
(1)求出椭圆
的方程;
(2)若直线
与曲线
交于不同的
两点,且线段
的中点
在曲线
上,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030700126fb012f13935f57780b96677.png)
(1)求出椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50687388994292af0d481d205780b42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2019-04-28更新
|
394次组卷
|
2卷引用:山西省忻州市原平市范亭中学2018-2019学年高二下学期期末数学试题
名校
9 . 如图1,等边
中,
,
是边
上的点(不与
重合),过点
作
交
于点
,沿
将
向上折起,使得平面
平面
,如图2所示.
(1)若异面直线
与
垂直,确定图1中点
的位置;
(2)证明:无论点
的位置如何,二面角
的余弦值都为定值,并求出这个定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82957366f4c9272b6ee99126d4b6bf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
(1)若异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)证明:无论点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18a490a22cac27417ddc794f00a1941.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/084fe24b-d60c-4f97-a94b-cc1352dbf19a.png?resizew=334)
您最近一年使用:0次
2019-04-07更新
|
425次组卷
|
2卷引用:山西省忻州市原平市范亭中学2018-2019学年高二下学期期末数学试题
名校
解题方法
10 . 已知椭圆
的离心率为
分别为其左、右焦点,
为椭圆
上一点,且
的周长为
.
(1)求椭圆
的方程;
(2)过点
作关于轴
对称的两条不同的直线
,若直线
交椭圆
于一点
,直线
交椭圆
于一点
,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e9c7962300f56a7ff7924814235a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c043d5e847c15f00af2c4633949680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb6f3d7540831a9e97d3b184a491.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd4da08956db1f206c8ea026f4e52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba1e1ca5040060dde64c667ec432a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41956b9c94b65f085625631f5f09d890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2019-04-04更新
|
1174次组卷
|
3卷引用:山西省忻州市第一中学2018-2019学年高二下学期期中考试数学(文)试题