名校
1 . 已知
为双曲线
的两个焦点,
为双曲线上的任意一点,若
的最小值为
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34005d3b709a89e3db6bb786bbfb2369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b61531bb6dcdf3ed678538faa3991ea.png)
A.![]() | B.![]() | C.2 | D.3 |
您最近一年使用:0次
2024-03-07更新
|
259次组卷
|
2卷引用:福建省泉州市2023-2024学年高二上学期1月期末教学质量监测数学试题
解题方法
2 . 如图,在四棱台
中,
,
,设
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067613594cca07e73993d85045e8964f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e14b373f8f375c9cbf9e48b7b61f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadbb07ec74fb4d27d1d5edce9dfb289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/391821ce-8ce7-4226-af9c-f42a49923aaf.png?resizew=164)
您最近一年使用:0次
3 . 下列命题中正确的是( )
A.已知![]() ![]() ![]() ![]() |
B.已知正四面体![]() ![]() |
C.已知![]() ![]() ![]() ![]() |
D.已知![]() ![]() ![]() |
您最近一年使用:0次
4 . 如图,在平行六面体
中,若
,则
( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/10/bf53e4a4-e7e3-449f-bb98-bbacab710395.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ba54b715ababff1a0911aa6c3df397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/10/bf53e4a4-e7e3-449f-bb98-bbacab710395.png?resizew=179)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
名校
解题方法
5 . 在
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f80c193bf76030524b4ed7a00d2272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9769839f35c2b7002b9f5e62f40b34de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-01-26更新
|
780次组卷
|
3卷引用:湖南省岳阳市岳阳楼区2022-2023学年高二上学期期末教学质量监测数学试题
湖南省岳阳市岳阳楼区2022-2023学年高二上学期期末教学质量监测数学试题 河南省周口市西华县第二高级中学2023-2024学年高一下学期开学考试数学试题(已下线)必考考点1 平面向量的运算 专题讲解(高一期末考试必考的10大核心考点 )
名校
解题方法
6 . 在棱长为1的正方体
中,点
满足
,其中
,
,则下列说法正确的是( )
![](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/6f9dd1458186cfbdf0701ba835572721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe62a251f3d6dfb60ba2a42bdda534c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54e229cadeac6ea81a965c18cb55b5d.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-12-29更新
|
465次组卷
|
3卷引用:江西省南昌市第二中学2023-2024学年高二上学期期末考试数学试卷
解题方法
7 . 在
中,角
所对的边分别为
,其面积为
为边
上的中线.
(1)证明:
;
(2)当
时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e30c0a5c92f50dce1f7624709950ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ec18aa8ab6f4a4e70722e4df77c9c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1674958a42b2e490fd1b43d31ab2e9ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e47edc1890691d332d542d64d749ffa6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509f4f1585a01315f2f4e5dbbcefb419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,四边形
是由
与正
拼接而成,设
,
.
时,设
,求
,
的值;
(2)当
时,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b1b28ddb0103369595094e146556f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c3603f95712793305083c3fcd71eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5cf1426a12392e5ae44bed5c062d16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
名校
解题方法
9 . 在平行四边形ABCD中,设M为线段BC的中点,N为线段AD上靠近D的三等分点,
,
,则向量
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e984585ddf28c039219afcebf229de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60473aae81429df1e8183425797a88c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-06-16更新
|
403次组卷
|
6卷引用:宁夏青铜峡市宁朔中学2022-2023学年高二下学期期末考试数学(理)试题
宁夏青铜峡市宁朔中学2022-2023学年高二下学期期末考试数学(理)试题重庆市渝东九校联盟2022-2023学年高一下学期期中数学试题陕西省西安市西北工业大学附属中学2022-2023学年高一下学期5月月考数学试题(已下线)广东省广州市中山大学附属中学2024届高三上学期期中数学试题变式题1-5(已下线)专题05 平面向量基本定理-【寒假自学课】(苏教版2019)安徽省合肥市普通高中六校联盟2023-2024学年高一下学期4月期中联考数学试题
名校
解题方法
10 . 已知
为抛物线
的焦点,点
在抛物线上,过点
的直线
与抛物线交于
,
两点,
为坐标原点,抛物线的准线与
轴的交点为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() ![]() |
B.若点![]() ![]() |
C.无论过点![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-05-20更新
|
654次组卷
|
3卷引用:黑龙江省牡丹江第二高级中学2023-2024学年高二上学期期末模拟数学试题