名校
1 . 如图,在四棱锥
中,底面
是菱形,
平面
,
分别是棱
的中点.
.
(2)若直线
与平面
所成的角分别为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548e845bc023e6b2866e1ead7411a7a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b094411c562930ff2d67b582cfd48cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55928df632fc6f2b88a44afe37e5a4e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df44d1ff1227c4de03ca21ac87f3f86a.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cb4a3840b16350cd611c85457fbccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c9aedf70a0d7dae193ec00ca059565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d05fb6e4c662c4747d8ebc740acee9.png)
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2 . 设
为离散型随机变量,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.![]() ![]() |
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解题方法
3 . 英国数学家贝叶斯在概率论研究方面成就显著,根据贝叶斯统计理论,随机事件A,B存在如下关系:
.若某地区一种疾病的患病率是0.05,现有一种试剂可以检验被检者是否患病.已知该试剂的准确率为95%,即在被检验者患病的前提下用该试剂检测,有95%的可能呈现阳性;该试剂的误报率为0.5%,即在被检验者未患病的情况下用该试剂检测,有0.5%的可能会误报阳性.现随机抽取该地区的一个被检验者,已知检验结果呈现阳性,则此人患病的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd78d3e25fe1b15e39573960c8ef8343.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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今日更新
|
313次组卷
|
5卷引用:江苏省海门中学2023-2024学年高二下学期5月学情调研数学试卷
江苏省海门中学2023-2024学年高二下学期5月学情调研数学试卷江苏省启东中学2023-2024学年高二年级下学期数学第二次月考(已下线)专题03 条件概率与事件独立性常考题型归类--高二期末考点大串讲(人教B版2019选择性必修第二册)(已下线)专题05 条件概率--高二期末考点大串讲(苏教版2019选择性必修第二册)河南省信阳市新县高级中学2024届高三考前第七次适应性考试数学试题
名校
4 . 如图,在四棱锥
中,四边形
为正方形
为等边三角形
分别是
和
的中点.
(1)求证:直线
平面
;
(2)若
求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7e7211d87f8e44dd5d61ce4f6c8ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29560ed838ea0c239351c94d23945a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/6/abc4db76-cd11-43ef-9739-9420097d6286.png?resizew=142)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d7c56ff7012053b6db5073df693800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422210c777ac0d625bbd81cc7601bf9b.png)
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解题方法
5 . 甲袋中有2个红球,2个白球和1个黑球,乙袋中有3个红球,1个白球和1个黑球(除颜色外,球的大小、形状完全相同).先从甲袋中随机取出1球放入乙袋,再从乙袋中随机取出1球.分别以
,
,
表示由甲袋取出的球是红球,白球和黑球的事件,以
表示由乙袋取出的球是红球的事件,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8b7d70d6d08cd3e2bcaeaf437feae0.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5a435ee3dd6c60a296e29b5aeb8f7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8b7d70d6d08cd3e2bcaeaf437feae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5a435ee3dd6c60a296e29b5aeb8f7.png)
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6 . 我们熟悉的网络新词,有“yyds”、“内卷”、“躺平”等,定义方程
的实数根
叫做函数
的“躺平点”.若函数
,
,
的“躺平点”分别为
,
,
,则
,
,
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be943c6bb7e170907c93eae6b13a42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d997e3fd54416a529c5095523bc15e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f17c20662a07a25d11f33a4488e31cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13487a3c7d84a5638de224a370910012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 如图,在四棱锥
中,平面
底面
,
,
,
,
,
,
.
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0453cfd7e92bf7746a88280b9e7b580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d74b6c5f9a335eb5137c0cd47488e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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解题方法
8 . 直四棱柱
的所有棱长都为
,
,点
在四边形
及其内部运动,且满足
,则点
到平面
的距离的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbaccd578a43b2397c8bdd50592fa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bf9ef324f1289e205e29fed105c38e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88e265ee000aed605e9fdf328745930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b78c047642924fe864028c81b1f49d.png)
您最近一年使用:0次
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9 . 已知函数
.
(1)若
,求函数
的零点;
(2)讨论函数
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ebf71f8af3c18ab6c6e80a0aa45271c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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10 . 已知
,向量
,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb6a037ca43e342496f5b00870a8689.png)
(1)求点
的坐标;
(2)若点
在直线
(
为坐标原点)上运动,当
取最小值时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baba5942e11975cd2383393d7e619136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7199e5758b135764a980570891013940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb6a037ca43e342496f5b00870a8689.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7787dfab61ed9830b531da365e592bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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