名校
解题方法
1 . 正三棱柱
的底面正三角形的边长为
为
的中点;
.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
平面
;
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1ebdf74ee45f3736307d4a7e64717f.png)
(3)求
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1bd8a678857b47bb627e665ce58df5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba9e20d667d04bf3ee7f55cc795ce01.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1ebdf74ee45f3736307d4a7e64717f.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
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名校
解题方法
2 . 已知样本
的平均数为6,方差为4,样本
的平均数为8,方差为2,则新样本
的方差为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1a2f40c3c0853c0d5a4150a9d3fc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd877ef4c893b656e492c8818822040c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452d50d88e44cd08b93df7989399ca94.png)
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名校
解题方法
3 . 在复平面内,已知复数
满足
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a6127234f0fb99c178b7a9778c1fe7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d860cb86e1467ac24010aecfc7a425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db439eae71afd7b462a07c61d3861330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011b0fb90081707a1351d382ee6cccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a6127234f0fb99c178b7a9778c1fe7.png)
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名校
4 . 下表统计了中国在第10届至第19届亚运会中获得的金牌数:
则中国获得金牌数的第70百分位数是( )
届数 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
金牌数 | 94 | 183 | 125 | 129 | 150 | 165 | 199 | 151 | 132 | 201 |
A.165 | B.174 | C.175 | D.183 |
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5 . 已知向量
,
.
(1)若
与
共线,求
的值;
(2)若
与
垂直,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf4c91859bee4f3d08cb5e49f0195f7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83c5803cc8c05849028a57c4bd4ee72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82686b81cdfb709d11271b592308df7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2555426ef9607377b02bcae1de8f6ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2024-06-13更新
|
697次组卷
|
4卷引用:福建省三明第一中学2023-2024学年高一下学期第二次月考数学试卷
福建省三明第一中学2023-2024学年高一下学期第二次月考数学试卷云南省下关第一中学2023-2024学年高一下学期5月期中考试数学试题(已下线)专题01 平面向量(2)-期末考点大串讲(苏教版(2019))江苏省扬州市第一中学2023-2024学年高一下学期5月教学质量调研评估数学试题
解题方法
6 . 在
中,已知
,
,
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a74c3e9a8f3f11e98b4fa659a97679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0f8cec0bda89b6c2ad7ab3cd6c219c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.4 | B.![]() | C.2 | D.1 |
您最近一年使用:0次
名校
解题方法
7 . 已知
,
,
,求:
(1)
;
(2)
与
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7958a6bddd1d578bbd6fbcb92e3f6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/190efc599b93baddd642ed5e2fcbcdaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594d993556173ded55043c25230776b2.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e6f98f23fea7db0f74897928024ca0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed492f7b29166ba5c1f0023b05a439c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3143307ad0ba4a631eac04e814993655.png)
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2024-05-29更新
|
619次组卷
|
5卷引用:福建省三明市尤溪县第七中学2023-2024学年高一下学期期中考试数学试题
解题方法
8 . 如图所示,在三棱台
中,
,则三棱锥
与三棱锥
的体积比为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08aa3e179479457eb542643ee2a4601b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010df4ca6f618ea64d3f91b2d9530822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38593653bedb845ecfa820806a29a1e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知
的二项展开式中二项式系数之和为256.
(1)求
的值;
(2)求展开式中
项的系数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3834f41d13645dd71096fe45cea230a0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)求展开式中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
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2024-05-09更新
|
426次组卷
|
2卷引用:福建省三明市第一中学2023-2024学年高二下学期第二次月考数学试题
解题方法
10 . 若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da81ee59bc7e2ac34df4452e4374e5d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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