1 . 正方体的棱长扩大到原来的
倍,则其表面积扩大到原来的__________ 倍,体积扩大到原来的__________ 倍.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2 . 点
对应的复数是
,点
对应的复数是
,则线段
的中点对应的复数是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb8477bcc87b1401970171bf57b9ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33286c6359bb69548e6b42253471a6ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c1fd680a5d355178273c6d6025eb80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9845fcf800c01a35d37bf592b66755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0600267caf4d9288ab8ba8f4f9b3d556.png)
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3 . 已知
分别为
的边
上的点,线段
和
相交于点
,若
,
,
,其中
.则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be878f5bdce9a3e9939a4ae743c803b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1174877b02d3c54c58314fa7cd1218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83463cbe4e6b434ce448c053cae70ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761e8ff96c96ac26682b521288a01bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c227da7ad9d24ae3e3740febf9f293.png)
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4 . 底面边长为
的正四棱锥被平行于其底面的平面所截,截去一个底面边长为
,高为3的正四棱锥,所得棱台的体积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
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解题方法
5 . 已知平面向量
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81555ce9f28be09335ce1f7d56cc58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460e5ba67828c57daf2edb497fb52e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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6 . 已知向量
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ ;若
,则向量
与
的夹角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157a894088b095cb5c82691d4d64314d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b958a367fa2f08b6202a5a6ebf5e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f622a667018a0a1b7b9334909c136090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b4cf9cd1d12fd577dad52f462b2bad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
您最近一年使用:0次
2024-06-18更新
|
287次组卷
|
2卷引用:广西重点高中2023-2024学年高一下学期5月阶段性联合调研考试数学试题
解题方法
7 . 已知向量
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff7a5187710bb18aec5cd561428e49c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844f3a7cdd50c10e32098349b0dc4a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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解题方法
8 . 在
中,角
所对的边分别为
若
且
的外接圆的半径为
则
面积的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7132c2d8b2ff504e6c2ba36c4f6dcfaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a052fa2f7556dc5949c42389021a191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e76e6efb9da6fc4294e6d7b2076188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
9 . 某工厂的三个车间生产同一种产品,三个车间的产量分布如图所示,现在用分层随机抽样方法从三个车间生产的该产品中抽取部分产品. 若
三个车间产品的平均寿命分别为200,220,210小时,方差分别为30,20,40,则总样本的方差为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
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名校
10 . 为促进学生德、智、体、美、劳全面发展,某校开发出文化艺术课程、科技课程、体育课程等多类课程.为了解该校各班参加科技课程的人数,从全校随机抽取5个班级,设这5个班级参加科技课程的人数分别为
.已知这5个班级参加科技课程的人数的平均数为9,方差为4,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d019d185f5c319c9b8f4995b4a3ec3c.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a669be979491171e4ff06f22eef63995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d019d185f5c319c9b8f4995b4a3ec3c.png)
您最近一年使用:0次
2024-06-17更新
|
251次组卷
|
3卷引用:广西重点高中2023-2024学年高一下学期5月阶段性联合调研考试数学试题