解题方法
1 . 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)
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2 . 已知长方体
中,点Q为线段
的中点,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01d0265627ee0ed15b86b0146a4839a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c132cb65943eb8785a5fab73d7bb88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01d0265627ee0ed15b86b0146a4839a.png)
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3 . 已知
四点共面且任意三点不共线,平面
外一点
,满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e51eb817cc4122eee0a0ede7c1d164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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2024-01-16更新
|
257次组卷
|
3卷引用:河北省沧州市泊头市第一中学2023-2024学年高二上学期1月月考数学试题
解题方法
4 . 在平面上有如下命题:“若
为直线
外一点,则点
在直线
上的充要条件是:存在实数
,满足
且
”类比此命题,给出点
在平面
上的充要条件是:______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e06ca53803f042a5eca99f56a70f05e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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5 . 在空间直角坐标系
中,请写出一个单位向量的坐标为__________ .(写出一个符合题意的坐标即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
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6 . 如图,在三棱锥
中,D是
的中点,若
,
,
,则
等于____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c817835a4be974ec9de50d8f23ec06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07dcf0b16163e0e0e0c0f248466ee7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/2e8175b3-08cc-4b64-b516-8ed27b92fd4a.png?resizew=140)
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2023-12-16更新
|
215次组卷
|
3卷引用:天津市滨海新区田家炳中学2023-2024学年高二上学期第二次月考数学试题
7 . 给出下列四个命题:
①方向相反的两个向量是相反向量;
②若
,
满足
且
,
同向,则
;
③不相等的两个空间向量的模必不相等;
④对于任意向量
,必有
.
其中真命题的序号为______ .
①方向相反的两个向量是相反向量;
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204b3760b7d2205058e08577ea438c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e2533f07582599408157d872d257dd.png)
③不相等的两个空间向量的模必不相等;
④对于任意向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb259bd6064946492bde050ec5a9053f.png)
其中真命题的序号为
您最近一年使用:0次
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解题方法
8 . 如图,在梯形ABCD中,
,
,点
为空间任一点,设
,
,
,则向量
用
,
,
表示为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a14895e4d42943e5a87ba078dd8268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1161e0345b3646c71365430dccbb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714e672583f293a4f385bd35accce875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0817b1d42d814047f094dea7b57cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcc9cc1edee22d39995777502be4d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce36c55a678b2d9da467ffde94b1b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff409cd3886c767afb13c9a869c5f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6570cd7c2f81c9fcffd2c64664f1564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d8e782e9687f2e6276a8541ff8dcf7.png)
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9 . 如图,在长方体
中,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/984b059c26969266523eaa870b147b8a.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/984b059c26969266523eaa870b147b8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/56813708-a032-4783-b1de-2862e0f499d0.png?resizew=159)
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2023-11-19更新
|
133次组卷
|
2卷引用:河南省南阳市唐河县鸿唐高级中学2023-2024学年高二上学期10月月考数学试题
名校
10 . 已知向量
,
,
,若
,
,
互不共线,且
,
,
共面,则
为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168eafc9d614f39e38071e5b838670e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8452f936533dfe37721f281a61a5cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5fc31320afe1d944affd491fb00e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2023-11-16更新
|
288次组卷
|
2卷引用:湖北省鄂东南省级示范高中教育教学改革联盟学校2023-2024学年高二上学期期中联考数学试题