名校
1 .
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:江苏省盐城市盐城中学2024届高三全仿真模拟考试数学试题
2 . 如图,在四面体
中,
,
,
,O为AC的中点,点M是棱BC的点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1082dd7e08556354aa7d4861d419e4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e44ffc234f673bf7dc3561f01504b96.png)
A.![]() |
B.四面体![]() ![]() |
C.四面体![]() ![]() |
D.M为![]() |
您最近一年使用:0次
解题方法
3 . 在正方体
中,
为
的中点,
是底面
上一点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() ![]() |
C.满足![]() ![]() |
D.满足直线![]() ![]() ![]() ![]() |
您最近一年使用:0次
4 . 已知抛物线
的焦点为
,直线
过点
交
于
两点,
在
两点的切线相交于点
的中点为
,且
交
于点
.当
的斜率为1时,
.
(1)求
的方程;
(2)若点
的横坐标为2,求
;
(3)设
在点
处的切线与
分别交于点
,求四边形
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d34b54ce42ccfb5779b2ba0f7e6147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ed9d97b8745ed1c15349ea3fffc299.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e80606375688893a72b406e2490e8f.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53abbd672b82a02c4975f99fbbd2c37.png)
您最近一年使用:0次
5 . 如图,在三棱锥
中,
,
分别是线段
的中点,
,
,
,
,
.
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d9ef979b9f27a28cbda6923e888ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df13357406a0265b6d7c861fdd1d035c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b691cf4f8fb736448e10447184e6de3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6bdfb0e1be5583e794ab614a8abe1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ea10539215794cd76e8b211abd503f.png)
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6 . 已知函数
.
(1)若
恒成立,求
的取值范围;
(2)若
有两个不同的零点
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d641340e7cd84102f0e8bad1a196ee.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5479b9a3456d44b5fabdf6a408569fc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
您最近一年使用:0次
解题方法
7 . 某单位为了解该公司员工家庭情况,用分层随机抽样方法作抽样调查,现从A部门和B部门共抽取3名员工,已知A部门和B部门分别有6名和3名员工,则不同的抽样结果共有( )
A.45种 | B.18种 | C.9种 | D.90种 |
您最近一年使用:0次
名校
解题方法
8 .
展开式中
的系数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad163af2e6518fce6f07bc25ad7c9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
A.![]() | B.5 | C.15 | D.35 |
您最近一年使用:0次
2024-05-17更新
|
2308次组卷
|
6卷引用:江苏省前黄高级中学2024届高三下学期三模适应性考试数学试题
名校
解题方法
9 . 近年来,我国众多新能源汽车制造企业迅速崛起.某企业着力推进技术革新,利润稳步提高.统计该企业2019年至2023年的利润(单位:亿元),得到如图所示的散点图.其中2019年至2023年对应的年份代码依次为1,2,3,4,5.
和
哪一个适宜作为企业利润y(单位:亿元)关于年份代码x的回归方程类型?(给出判断即可,不必说明理由)
(2)根据(1)中的判断结果,建立y关于x的回归方程;
(3)根据(2)的结果,估计2024年的企业利润.
参考公式及数据;
,
,
,
,
,
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a5b1c19e4c57f1d259f8269e551c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5b75998316104f379d131d55957ff1.png)
(2)根据(1)中的判断结果,建立y关于x的回归方程;
(3)根据(2)的结果,估计2024年的企业利润.
参考公式及数据;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9874c5d906442bd944d2ed717dba77f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58291bd91befe1061530246da983727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363c708449621fdd80ab4f53c2fbae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6946f971cbc70ef156d6df47577d845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d9ea6f4956545299b5b40cf46dda53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67b06e71d87498ed9972d63a3b3d431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c09ad1329210928e212ad10dba92052.png)
您最近一年使用:0次
2024-05-17更新
|
2569次组卷
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6卷引用:江苏省无锡市辅仁高级中学2024届高三下学期高考前适应性练习数学试题
江苏省无锡市辅仁高级中学2024届高三下学期高考前适应性练习数学试题山东省济南市2024届高三下学期高考针对性训练(5月模拟)数学试题(已下线)湖南省益阳市2024届高三下学期5月适应性考试数学试题(已下线)【人教A版(2019)】高二下学期期末模拟测试A卷(已下线)专题05 一元线性回归模型与独立性检验--高二期末考点大串讲(人教B版2019选择性必修第二册)黑龙江省哈尔滨市双城区兆麟中学2023-2024学年高二下学期第二次月考(6月)数学试题
名校
10 . 如图,在三棱台
中,平面
平面
,
,
,
.
的高;
(2)若直线
与平面
所成角的正弦值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28d6477c85c5a4ac410a884e92fbe53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04a00be3fbb609efe407b6ae4e9c4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b9db3d29a27dcb64a32004cc0b7610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20af148464904e21f4374cc8fb886fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83303d3784492506fc44f2b4d6b07bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
2024-05-17更新
|
1188次组卷
|
4卷引用:江苏省无锡市辅仁高级中学2024届高三下学期高考前适应性练习数学试题
江苏省无锡市辅仁高级中学2024届高三下学期高考前适应性练习数学试题山东省济南市2024届高三下学期高考针对性训练(5月模拟)数学试题山东省菏泽外国语学校2024届高三数学模拟检测卷(四)(已下线)专题01 空间向量与立体几何解答题必考题型(6类题型)-备战2023-2024学年高二数学下学期期末真题分类汇编(江苏专用)