1 . 已知数列
的首项为2,前
项和为
,
.若数列
的前
项和为
,则满足
成立的
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1855142817494316c4532c13a675f695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6fc4b7329ae1322f7ba93fc9fe1a279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c85f7fe924133eb2f62632f630d0c775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
名校
解题方法
2 . 某校团委对学生性别和喜欢短视频是否有关联进行了一次调查,其中被调查的男生、女生人数均为
,男生中喜欢短视频的人数占男生人数的
,女生中喜欢短视频的人数占女生人数的
.若有
的把握认为喜欢短视频和性别相关联,则
的最小值为________ .附
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b6803cab3329586ed82bdf831db99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363cc53497fdfac77b43f656424f973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2187714e660234f0b72f2b47d3ea685a.png)
![]() | 0.05 | 0.01 |
![]() | 3.841 | 6.635 |
您最近一年使用:0次
3 . 记
为等比数列
的前
项的和,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eab8f8926b996f9bee57d96067f5bac.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752cf42c1043745a337b6c0394709c70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80428714c231ffb2c088af51ba22fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eab8f8926b996f9bee57d96067f5bac.png)
您最近一年使用:0次
2024-06-03更新
|
559次组卷
|
2卷引用:2024年辽宁省普通高等学校招生全国统一考试(模拟2)数学试题
名校
解题方法
4 . 设
是单位向量,且
,则
的范围为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19e9066e6ebe86de2108970c51a8b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44af35a76ebdff0711357aa62324c0e1.png)
您最近一年使用:0次
5 . 设向量
,
的夹角为
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67abf48f97b85195194a5338c72596af.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7958a6bddd1d578bbd6fbcb92e3f6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2396cac4b185cf1f1a67dad9248481c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67abf48f97b85195194a5338c72596af.png)
您最近一年使用:0次
名校
6 . 已知函数
在
内恰有两个不同的零点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97dad16e4910ec15add074c4077b0e86.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d052f5c44e99d0dbe66f438388c517c2.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4dbd5e98eface20d7122a32d21a477f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23efa380a58dc9663ba06dc249ce721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97dad16e4910ec15add074c4077b0e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d052f5c44e99d0dbe66f438388c517c2.png)
您最近一年使用:0次
2024-06-03更新
|
345次组卷
|
2卷引用:辽宁省本溪市县级重点高中协作体2023-2024学年高一下学期期中考试数学试卷
名校
7 . 已知
,
,则向量
在向量
方向上的投影向量为________ (用坐标表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e745905cf02d7165c2a2dfddcee05f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc77f4da163cb8800d6a92637912077e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
您最近一年使用:0次
2024-06-03更新
|
332次组卷
|
2卷引用:辽宁省朝阳市建平县实验中学2023-2024学年高一下学期5月期中考试数学试题
名校
解题方法
8 . 在空间直角坐标系中,已知
,则几何体
的体积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfae9b085798f2e25e25d877c32bdd23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
您最近一年使用:0次
9 . 已知圆
,点
,点
为圆
上的一个动点(异于点
),若点
在以AB为直径的圆上,则
到
轴距离的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94fcb28f57a0491d5c0938ae056c79f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0ee961ef09c5c63bedb4a5f0082079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2024-06-03更新
|
291次组卷
|
2卷引用:2024年辽宁省普通高等学校招生全国统一考试(模拟1)数学试题
名校
10 .
的展开式中,
的系数为______ .(用数字作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67864ee7fc719128830714f4dc9a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d8026e7e56b5a88c2bb9347c9d204d.png)
您最近一年使用:0次
2024-06-03更新
|
844次组卷
|
3卷引用:2024年辽宁省普通高等学校招生全国统一考试(模拟1)数学试题