1 . 已知空间向量
,
,
共面,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf20929e6e0a15963131ebe72cb0eb3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72f0a5022aae04de5c4ed2854b19223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c082414fb6d7c15b8be0051faf817449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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2 . 已知向量
,
,
,若
三个向量共面,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b014d00c7730189d08d0af9ac76f465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c62db793887f54878fd020cd5d09811d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9acbd3d31d44fd6b76987baa09d9105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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2024-06-05更新
|
135次组卷
|
2卷引用:广东省湛江市第一中学2023-2024学年高二下学期开学考试数学试题
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3 . 已知三棱锥
的体积为
,
是空间中一点,
,则三棱锥
的体积是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2aaed1e9ead175f30f7130569d0411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5923ce2c5d69a5d50e694dc83ae661e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cfb0fce390517e85210a75d9cb373e.png)
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4 . 已知三棱锥
,空间内一点
满足
,则三棱锥
与
的体积之比为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9de695c560aeff95fdde7d0b4476ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
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2024-04-07更新
|
746次组卷
|
4卷引用:上海市复旦中学2023-2024学年高二下学期5月月考数学试卷
5 . 已知向量
,若
共面,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b189b00e5dd92cde97af5c52a31012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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6 . 已知A,B,C,D四点共面且任意三点不共线,平面ABCD外一点P,满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521172dd0cdac26bedf2b10f325458fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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7 . 有下列命题:
①若
,则
四点共线;
②若
,则
三点共线;
③若
为不共线的非零向量,
,则
;
④若向量
是三个不共面的向量,且满足等式
,则
.
其中是真命题的序号是_______ (把所有真命题的序号都填上).
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5134c9a4a8dd39a7c291bf9b2d2e0e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f8e8b9df76659e3eec77d8d2422224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd12ed89125f9acce3ec91cc4ba7f6c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076559f08d17fb25e82886e791719e52.png)
④若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb4f795474089c4ca5183f0b8c8210d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572ea6438c3730044ccac62b164a9754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f73a0f4b1b213afdadd382d927aca4.png)
其中是真命题的序号是
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解题方法
8 . 已知三棱锥
的体积为
是空间中一点,
,则三棱锥
的体积是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943032df8db30f2c52335b0fff28ce6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5923ce2c5d69a5d50e694dc83ae661e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec8fa1baf58d104867f595c15c001c1.png)
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2024-03-03更新
|
804次组卷
|
5卷引用:浙江省丽水市2023-2024学年高二上学期1月期末教学质量监控数学试题
浙江省丽水市2023-2024学年高二上学期1月期末教学质量监控数学试题江苏省南通市海门中学2023-2024学年高二下学期3月阶段练习数学试卷广东省2024届高三数学新改革适应性训练五(九省联考题型)(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 空间向量基底法 微点4 空间向量基底法(四)【基础版】(已下线)专题7 立体几何综合问题【练】
9 . 已知向量
,
,
,若
共面,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317d779a75636d13e22c7a2da2a1faac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65bda748f1164d6891ed75334d3244de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6285b36675aed337017bb6864504b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次