名校
解题方法
1 . 设
且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7d7506b021e03cc317af97ce1b860f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e067be545a0178382625422a2e67621d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4983fe3334ccea18148120f8af685f7.png)
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2 . 已知
是虚数单位,复数
在复平面内对应的点的坐标为
,则复数
的共轭复数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5456a69348f1d3bf1b1b457ae67331d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76095b03d243fead89a6493614e4b68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-08更新
|
410次组卷
|
2卷引用:河北省保定市部分高中2023-2024学年高三下学期开学检测考试数学试题
名校
解题方法
3 . 已知集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff5a01719b84a0e1aeb784bbe43a762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
您最近一年使用:0次
2024-03-08更新
|
992次组卷
|
3卷引用:河北省保定市部分高中2023-2024学年高三下学期开学检测考试数学试题
名校
4 . 已知
的展开式的二项式系数和为64,则其展开式的常数项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d21b7348e9f683bcb10aac8ed3faaf.png)
A.240 | B.![]() | C.729 | D.3840 |
您最近一年使用:0次
2024-03-08更新
|
1094次组卷
|
3卷引用:河北省保定市部分高中2023-2024学年高三下学期开学检测考试数学试题
名校
解题方法
5 . 已知
,
分别为双曲线
的上、下焦点,过
作与
轴平行的直线分别交双曲线的渐近线于
,
两点,若
为等边三角形,则双曲线
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5651ad312b44662f444de95a6318826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167863df11667e8bbdd204413d3b5137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 .
的二项展开式中,
的系数与
的系数之差为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d333ddd89550e49a29b99f7439faeee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61526d17d59d9319fbebcb194da1910.png)
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解题方法
7 . 若函数
是
上的偶函数,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955c8ed29c1d3ba5c96c3f380c5e6c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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8 . 已知复数
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b2d9d0be3bc0778c337a41ad8ea83f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f9afbc3dc18555bf23f0e7d0a8e79c.png)
A.i | B.![]() | C.7 | D.1 |
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9 . 设集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f042e5487331211c8e59283fc91f8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b287a494b221230b91c56f4864ab1040.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知数列
是公比大于
的等比数列,下面叙述正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
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