1 . 等比数列
中,
,
,记
为
的前n项和,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d06fdfcb98f8666f57959bd0b809ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3299d1d394efc1381671b1632e6e87e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
A.![]() | B.![]() | C.![]() | D.0 |
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解题方法
2 . 已知圆的内接四边形
中,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae3a771c5a24180b7d5c5db0f5179079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c9c9357f6e618f149423a945a68ddf.png)
A.-3 | B.![]() | C.![]() | D.3 |
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3 . 已知复数
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839ba7c0f1fc30151d18a2e337951dd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b1dfed132bb38878bcf3609eb08361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d7c1ea926aecda28b226961e06299f.png)
A.![]() | B.2 | C.-2 | D.![]() |
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解题方法
4 . 设双曲线E的中心为O,一个焦点为F,过F作E的两条渐近线的垂线,垂足分别为A、
.若
,则E的离心率等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/918004dd5f71a151314ff952f67e2211.png)
A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
5 . 已知集合
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dffb72ec059fb59242dd4a6b71ef418b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6467a43f0c67f468ada2a206190faef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1329849d66eda4d866c323eb90d896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb2f87452a6a5fe9dd73766b16d66bf.png)
A.-3 | B.-1 | C.1 | D.3 |
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解题方法
6 . 甲、乙、丙、丁四位同学报名参加4项不同的趣味运动项目,每人只能报一项,则在乙、丙、丁三位同学所报项目与甲同学所报项目不同的条件下,四位同学所报项目各不相同的概率等于( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 已知
,
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b40b1544e62be8b9e9f4dc9f2c0c74.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
8 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8ee93f7771f73f0303642db5783b21.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1854fd8bf76e74f6414fc8c9a77a0216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8ee93f7771f73f0303642db5783b21.png)
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9 . 曲线
在点
处的切线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd9c33bde28a4f5e3d085d60e71d33b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d66e9d52546beeea016d6d7d3f0ca6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 已知集合
,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dafc1612956e58136e2169e484379ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db826a9d9cb6add9168bf84e9c5e7c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次