1 . 下表中的数阵为“森德拉姆筛”,其特点是每行每列都成等差数列
表中对角线上的一列数2,5.10,17,26,37,…构成数列
,则
( )
2 | 3 | 4 | 5 | 6 | 7 | … |
3 | 5 | 7 | 9 | 11 | 13 | … |
4 | 7 | 10 | 18 | 16 | 19 | … |
5 | 9 | 13 | 17 | 21 | 25 | … |
6 | 11 | 16 | 21 | 26 | 31 | … |
7 | 13 | 19 | 25 | 31 | 37 | … |
… | … | … | … | … | …… |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbc12ecb6d1d18f4a7ae777bde43d27.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 棱长为
正方体的顶点都在球面上,则该球的体积是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 函数
的周期、振幅、初相分别是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf03dd3c59809f313486e35f8ebe679.png)
A.![]() ![]() | B.![]() ![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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4 . 已知O是平行四边形ABCD内一点,设
,
,
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420ad6159fc091d6a5ffddf0676d2662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c2e7e9fd8519fd1c293cc577408263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a40f8ef7e3af00c41f85a20578afdb57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46a1f8d0fa429480917c5c126870d44.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 某中学举行数学解题比赛,其中7人的比赛成绩分别为:70,97,85,90,98,73,95,则这7人成绩的上四分位数是________ .
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6 . 已知向量
,
,则
在
上的投影向量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc4e2320c85265180570f50124eafe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29cededd9a7446afef5763e17acfb636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . “杨辉三角”是二项式系数在三角形中的一种几何排列.从第1层开始,第
层从左到右的数字之和记为
,如
,
,…,则
的前9项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e7df0430db8db9fc354ffdd038fb432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c996a43ff8843aec0be0a9d0ac0e9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
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8 . 已知数列
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65cf4f6bfe2ab856ccfd0062a8bf4f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dce2745788c9606efb2482959381fc7.png)
A.2 | B.![]() | C.5 | D.![]() |
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9 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8051f602c4dbe7dd12c27ca596f0c861.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 若函数
可导,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d384e50e0ec20bf2c2a691854bc3a5c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5143f99af5e14bd2e240b3cfdbfe9d20.png)
A.2 | B.1 | C.![]() | D.![]() |
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