23-24高二上·全国·课后作业
1 . 设圆O的弦
的中点为M,过点M任作两弦
,弦
与
分别交
于点E,F.
的中点;
(2)如果将圆分别变为椭圆、双曲线或抛物线,你能得到类似的结论吗?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如果将圆分别变为椭圆、双曲线或抛物线,你能得到类似的结论吗?
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解题方法
2 . 如图,四边形
与
均为菱形,
,
,
,记平面
与平面
的交线为
.
;
(2)证明:平面
平面
;
(3)记平面
与平面
夹角为
,若正实数
,
满足
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf80b036459da6dcb841a4bbe3859fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d223346f234798b92bd1eaa78360b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7ce5d5cc777ef4d5b890cc9cbb70b0.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b6711e6dd48be6cf8fa52926924d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)记平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b7195a853621ea5bebe8d2d1436732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b992104248a854e6e033c26602aff813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7bfbdbf0f1957459f12ae149d5176e.png)
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2023-07-11更新
|
1949次组卷
|
5卷引用:山东省青岛市平度市2022-2023学年高一下学期期末数学试题
名校
解题方法
3 . 我们把和两条异面直线都垂直相交的直线叫做两条异面直线的公垂线.如图,在菱形
中,
,将
沿
翻折,使点A到点P处.E,F,G分别为
,
,
的中点,且
是
与
的公垂线.
(1)证明:三棱锥
为正四面体;
(2)若点M,N分别在
,
上,且
为
与
的公垂线.
①求
的值;
②记四面体
的内切球半径为r,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/7/36d7309a-d789-4b0d-bbdc-a09e1456bdf9.png?resizew=341)
(1)证明:三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
(2)若点M,N分别在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51583e34d76abf46a39b56014a536208.png)
②记四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922b1e3f3948b044ff8f53af2aa1f038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acf3747141ec164fcf0dff92439fd1.png)
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2090次组卷
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9卷引用:重庆市南开中学校2022-2023学年高一下学期期末数学试题
重庆市南开中学校2022-2023学年高一下学期期末数学试题四川省成都市2023-2024学年高二上学期九月调研考试(校级联考)数学试题四川省成都市树德中学2023-2024学年高二上学期10月阶段性测试数学试题(已下线)专题01 空间向量及其运算压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)(已下线)第一章 空间向量与立体几何(压轴题专练,精选20题)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第一册)(已下线)第3章 空间向量及其应用(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)(已下线)第3章 空间向量及其应用 单元综合检测(难点)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)(已下线)第三章 折叠、旋转与展开 专题一 平面图形的翻折、旋转 微点4 翻折、旋转问题中的最值(一)(已下线)第四章 立体几何解题通法 专题二 体积法 微点2 体积法(二)【基础版】
4 . 设双曲线
,直线
与双曲线
的右支交于点
,
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fcd560996764805b57994a97c26e56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/7f9e8449aad35c5d840a3395ea86df6d.png)
A.双曲线![]() |
B.离心率最小时双曲线![]() ![]() |
C.若直线![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
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2023-06-22更新
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705次组卷
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6卷引用:浙江省杭州市2022-2023学年高二下学期期末数学试题
5 . 设
,函数
,给出下列四个结论:
①
在区间
上单调递减;
②当
时,
存在最大值;
③设
,则
;
④设
.若
存在最小值,则a的取值范围是
.
其中所有正确结论的序号是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e09c9b3f92accfbaf2cee6a84a1d94.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a7642c9278c33a62f1ed6a7cc468fb.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d110e0f424eed2183ac3ce5c50391ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf7dfe611c3e562f47c2cafd4a83ad2.png)
④设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94847a103e709508bd0e1ef50d6bb742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82358b724051b032c7ec734a226ae84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f59a84526646f8d6f5fccb3796f654.png)
其中所有正确结论的序号是
您最近一年使用:0次
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11034次组卷
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21卷引用:2023年北京高考数学真题
2023年北京高考数学真题专题02函数与导数(成品)专题07平面解析几何(成品)(已下线)2023年北京高考数学真题变式题11-15北京十年真题专题02函数概念与基本初等函数(已下线)考点2 分段函数 2024届高考数学考点总动员 (讲)(已下线)第一讲:数形结合思想【练】北京市西城区北师大二附中2024届高三上学期期中数学试题(已下线)专题2 函数的性质综合应用【练】 模块3 变量关系篇(函数)高三清北学霸150分晋级必备专题08平面解析几何(已下线)第07讲 函数与方程(练习)(已下线)技巧02 填空题的答题技巧(8大核心考点)(讲义)(已下线)专题05 函数的概念及表示(已下线)高三数学考前冲刺押题模拟卷01(2024新题型)(已下线)2.1 函数的概念及其表示(高考真题素材之十年高考)(已下线)2.4函数的图象(高考真题素材之十年高考)(已下线)【类题归纳】代数表达 数形结合(已下线)高考数学测试 请勿下载(已下线)专题3 函数填空题(文科)-1(已下线)专题03 函数填空题(理科)-1专题12平面解析几何(第二部分)
名校
6 . 已知
为正整数,对于给定的函数
,定义一个
次多项式
如下:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18970eb9afce70d15d8b276535427df2.png)
(1)当
时,求
;
(2)当
时,求
;
(3)当
时,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c64d8ccd22b77a2b30da084d30d2e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18970eb9afce70d15d8b276535427df2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28638f8c054a7bb4d9b46fde330bc76f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c64d8ccd22b77a2b30da084d30d2e04.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c64d8ccd22b77a2b30da084d30d2e04.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1c079afd1b058adc67a50f48f3d466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c64d8ccd22b77a2b30da084d30d2e04.png)
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7 . 已知O为坐标原点,抛物线的方程为
,F是抛物线的焦点,椭圆的方程为
,过F的直线l与抛物线交于M,N两点,反向延长
,
分别与椭圆交于P,Q两点.
(1)求
的值;
(2)若
恒成立,求椭圆的方程;
(3)在(2)的条件下,若
的最小值为1,求抛物线的方程(其中
,
分别是
和
的面积).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/677e529a-d84f-4643-9bb7-36d6ffa656f7.png?resizew=189)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c240a5e281eb282e3d596a446c9544.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4694efe768e893333f251f107e2db08.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff3f1f2f1e381468180514bb6bc741d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e07f90e126b62cace1bb0de0041d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30654ba32a8ac50a05dc7e34bba72dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
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解题方法
8 . 点
均在抛物线
上,若直线
分别经过两定点
,则
经过定点
,直线
分别交
轴于
,
为原点,记
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020905372f7e786fe0f8e30f7b166f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f99db2e33dfac43986bbc6acfea12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa87ac2b7d6a58f5aaee923d83f799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bddeb78600cae7ab335bddc1fc41108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b19da798ac8e5e9dcc20405b2a485ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-04-15更新
|
2019次组卷
|
7卷引用:四川省达州市2023届高三二模数学(理科)试题
四川省达州市2023届高三二模数学(理科)试题重庆市万州第二高级中学2024届高三上学期7月月考数学试题(已下线)重难专攻(十)圆锥曲线中的定点问题 B卷素养提升卷(已下线)3.3.1 抛物线及其标准方程(AB分层训练)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)(已下线)专题14 抛物线-1广东省广州市第六中学2024届高三上学期第一次调研数学试题(已下线)专题7 圆的包含问题
名校
9 . 已知
,设函数
的表达式为
(其中
)
(1)设
,
,当
时,求x的取值范围;
(2)设
,
,集合
,记
,若
在D上为严格增函数且对D上的任意两个变量s,t,均有
成立,求c的取值范围;
(3)当
,
,
时,记
,其中n为正整数.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73254f32b6da29ecc32df2e9f87a4c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68155558673dee3c3b339a73d752097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e1d58efba7354ff2ccb96922732094.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0248255c35db564b386e4a997f822a95.png)
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(3)当
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2023-04-13更新
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1503次组卷
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5卷引用:上海市普陀区2023届高三二模数学试题
上海市普陀区2023届高三二模数学试题天津市耀华中学2023届高三二模数学试题天津市南开中学2022-2023学年高二下学期期末数学试题(已下线)重难点04导数的应用六种解法(1)(已下线)专题04 函数导数综合应用(四大题型)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(天津专用)
2023·江西·二模
解题方法
10 . 李华在研究化学反应时,把反应抽象为小球之间的碰撞,而碰撞又分为有效碰撞和无效碰撞,李华有3个小球
和3个小球
,当发生有效碰撞时,
,
上的计数器分别增加2计数和1计数,
,
球两两发生有效碰撞的概率均为
,现在李华取三个球让他们之间两两碰撞,结束后从中随机取一个球,发现其上计数为2,则李华一开始取出的三个球里,小球
个数的期望是( )个
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A.1.2 | B.1.6 | C.1.8 | D.2 |
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