1 . 化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0a5099de64b6e1caca837bcd8a3d34.png)
您最近一年使用:0次
2 . 如图,长方体
中,点E,F分别是
和BD的中点,
,
,
,将下列两组中相等的向量连线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08b344a0ebe520f4147702257aa276b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc9a915b6183ce6418229dad5fec617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f639828509b293069c2782d049d22f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19537b6aa2888860ce6a8033d4a63fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a0e783537963d7ebd93b2e481c548e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8d06249c2993354ec165218a038265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea16abad79703e194ef022e430682021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08b344a0ebe520f4147702257aa276b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532a41ad7600bcb9eecb949fec58acee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb169a920a8286d127ba71b99f5c139b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc9a915b6183ce6418229dad5fec617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9492b5602eba95ed7757f60687aaa1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae54940f33b8714da5fe3b7546f8b3dc.png)
您最近一年使用:0次
名校
解题方法
3 . 四棱锥
的底面为正方形,
底面
,
,
,
,平面
平面
,
平面
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b624742fe28db114e0554c6c87bff05c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5036676ff9363a8356f9d0ee6b6c5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37c66f38ce2090dab15ac1207c0a65b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64899adb2cc8913ed7d511eade821422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e61111c1e9b98b79615f75540175c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757489b22e7c59387705e75c8d28d902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dabd94d9a9bde8d08c35af0b3d02ee3b.png)
A.直线![]() ![]() |
B.![]() |
C.![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
2024-04-29更新
|
831次组卷
|
3卷引用:湖南省长郡中学、浙江省杭州二中、江苏省南京师大附中三校2023-2024学年高三下学期联考数学试题
2024高三·全国·专题练习
名校
4 . 如图,在空间四边形
中,
,
分别是
,
的中点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940cb626f4c8c79195e08ff2f2de34bf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-26更新
|
280次组卷
|
3卷引用:FHgkyldyjsx12
解题方法
5 . 平行六面体
中,
为
的中点,设
,
,
,用
表示
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b9d8a08fc52c31cc1a7f527d18b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184359fe3cadc363cf4ebe586c2b3db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2410e0e103cc41264a2d0f5c0e3f3ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f33a112e9728d7b560199765c815f69.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
6 . 如图,在正三棱柱
中,
为空间一动点,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b68c8e30370f61d3e807e51c55f3258.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.存在![]() ![]() |
D.存在![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-04-08更新
|
445次组卷
|
4卷引用:山西省长治市2023-2024学年高二下学期3月质量检测数学试题
山西省长治市2023-2024学年高二下学期3月质量检测数学试题(已下线)模块3 第8套 复盘卷(已下线)专题7 立体几何综合问题【讲】重庆市第十一中学校2023-2024学年高三第九次质量检测数学试题
名校
解题方法
7 . 正三棱锥
中,底面边长
,侧棱
,向量
,
满足
,
,则
的最大值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da3fdf44b48a0d66b87441fc699cab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b396937ce186ccb792210cb7b852f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ca854e782895e8f5f08a65dce610c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e6f98f23fea7db0f74897928024ca0.png)
您最近一年使用:0次
2024-04-01更新
|
1146次组卷
|
6卷引用:上海市浦东新区2024届高三下学期期中教学质量检测数学试卷
上海市浦东新区2024届高三下学期期中教学质量检测数学试卷(已下线)压轴小题5 空间向量中的最值问题江苏省姜堰中学2024届高三下学期阶段性测试(2.5模)数学试题(已下线)数学(上海卷01)(已下线)压轴题06向量、复数压轴题16题型汇总-1上海市吴淞中学2023-2024学年高二下学期第二次调研(5月)数学试卷
2024高三·全国·专题练习
8 . 如图,在平行六面体ABCD-A1B1C1D1中,设AA1=a,=b,
=c,M,N,P分别是AA1,BC,C1D1的中点.试用a,b,c表示以下各向量:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
(2)A1N;
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76782c6299c144c919de3213c60a7e5f.png)
您最近一年使用:0次
解题方法
9 . 如图,在平行四边形中,
,
,且EF交AC于点G,现沿折痕AC将
折起,直至满足条件
,此时EF的长度为
您最近一年使用:0次
10 . 在三棱柱
中,
,
,且
平面
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d74b1d0480790400a9223e4437afdba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7dc14ef100b26679193fb93f3a8b5c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f214481e6b23307a37940f6dd0313d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4e7552a39c412d882766dbcd7eeb69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次