1 . 全称量词命题、存在量词命题及含量词命题的否定
命题名称 | 命题结构 | 命题简记 | 命题的否定 |
全称量词命题 | 对M中任意一个x, | ||
存在量词命题 | 存在M中的元素x, |
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2 . 已知,则
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23-24高二下·江苏·课前预习
3 . 如图所示,在平行六面体中,设
,
分别是
的中点,试用
表示以下各向量:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cc37b6cfb037ac5e114daeb3a3b68f.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76782c6299c144c919de3213c60a7e5f.png)
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23-24高二下·江苏·课前预习
解题方法
4 . 如图,四棱柱的所有棱长都相等,
,
,四边形
和四边形
均为矩形,
,求二面角
的平面角的余弦值.
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23-24高二下·江苏·课前预习
5 . 在四面体ABCD中,设
=
,
=
,
=
,E,F分别是AB,CD的中点,试用
,
,
表示向量
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.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/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae54940f33b8714da5fe3b7546f8b3dc.png)
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23-24高二下·江苏·课前预习
6 . 如图所示,在平行六面体
中,设
,M,N分别是
的中点,P在线段
上,且
,试用
表示向量
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da90a14d217685c9a91b7350b7a11a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d061c7a9c98768ead226c27bdfd2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6aaad56f90846e5298555dd7c1112a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/65876cf9-6ec4-4ebd-80af-bc58b3b08a86.png?resizew=147)
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23-24高二下·江苏·课前预习
解题方法
7 . 已知空间向量
,若
与
垂直,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e836b95939a8500103d2fe9962aad8.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1265032f7fd561bacb3abdccb4c0e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67a5673958e175b00200a75e645c73c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e836b95939a8500103d2fe9962aad8.png)
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23-24高二下·江苏·课前预习
8 . 设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3954d7696d770d881416d21d67e10948.png)
若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296b0d153e9f20118a0bdf6ca7143a7d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3954d7696d770d881416d21d67e10948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c266a7b82a839ae60d345ed29da9cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b958a367fa2f08b6202a5a6ebf5e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296b0d153e9f20118a0bdf6ca7143a7d.png)
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23-24高二下·江苏·课前预习
9 . 已知三点A,B,C不共线,对平面ABC外一点O,且满足
,判断点P是否与点A,B,C共面.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8d1585b5b9912f2a69c0f054f5350a.png)
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