名校
1 . 已知长方体
的底面
是正方形,
,
,
为棱
的中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deab75d571b23f40cd7b4157f002fa5c.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.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/deab75d571b23f40cd7b4157f002fa5c.png)
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2023-10-22更新
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137次组卷
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2卷引用:北京师范大学良乡附属中学2023-2024学年高二上学期10月月考数学试题
名校
2 . 已知向量
,
,若
,则实数
等于________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976e5132e974cbb49c6c012b1d83dd56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d60d620099fa6d3979a1a7c43e02c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a13492a2be0bd769d799fd75c4883fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2021-12-15更新
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4卷引用:北京师范大学良乡附属中学2023-2024学年高二上学期10月月考数学试题
3 . 如图,在长方形ABCD-
中,设AD=A
=1,AB=2,则
·
等于____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d4bbb7b124c93ba403177bb1b2c49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035a5a88e7e2d6ef2b47d992412a1f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4feafb6ff8a0f0ea0fe6d3b55eb499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d63e57f893ff7942d98e50e8a26d65.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/ca10f10d-4b30-4646-ab1f-81b9fe11eeec.png?resizew=250)
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2019-09-14更新
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963次组卷
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3卷引用:北京市房山区2018-2019学年第二学期高二期末数学
北京市房山区2018-2019学年第二学期高二期末数学(已下线)2019年12月11日《每日一题》选修2-1理数-空间向量的数量积北京市首都师范大学附属密云中学2022-2023学年高二上学期阶段性练习数学试题