名校
解题方法
1 . 椭圆
:
的左、右焦点分别为
,
,点
在椭圆上且同时满足:
①
是等腰三角形;
②
是钝角三角形;
③线段
为
的腰;
④椭圆
上恰好有4个不同的点
.
则椭圆
的离心率的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fbc9b62f2e82af009bd2f4587969fb.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fbc9b62f2e82af009bd2f4587969fb.png)
③线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fbc9b62f2e82af009bd2f4587969fb.png)
④椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
则椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
解题方法
2 . 设函数
,
为
的导函数.
(Ⅰ)当
时,证明:
;
(Ⅱ)设
为函数
在区间
内的零点,其中
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139e79a0726b6cbb86966ff1d405b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b42048481d02f1112bbcd877790334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c52557b511fa214776612699697f39.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c2eda063d880d52576237aac880434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8e497f623891316aca634eb9c223d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac69e6db1df13ed64756b4f391ae9fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72fd4ff7085ca173689e9306131733.png)
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3 . 已知集合
.由集合
中所有的点组成的图形如图中阴影部分所示,中间白色部分形如美丽的“水滴”.给出下列结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/2a3f9db7-2043-44c1-bad8-e2ef89c99a68.png?resizew=240)
①“水滴”图形与
轴相交,最高点记为
,则点
的坐标为
;
②在集合
中任取一点
,则
到原点的距离的最大值为3;
③阴影部分与
轴相交,最高点和最低点分别记为
,
,则
;
④白色“水滴”图形的面积是
.
其中正确的有______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb08c4ccb791cce5c8adc21812e6e822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/2a3f9db7-2043-44c1-bad8-e2ef89c99a68.png?resizew=240)
①“水滴”图形与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
②在集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
③阴影部分与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66980c29d59e294bbcb4197e5b2d5476.png)
④白色“水滴”图形的面积是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e9521a4bda58b6a4cedac2d54fdca9.png)
其中正确的有
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2020-12-09更新
|
1270次组卷
|
5卷引用:北京市中国人民大学附属中学2021届高三上学期数学统练5试题
北京市中国人民大学附属中学2021届高三上学期数学统练5试题北京市八一学校2022届高三一模模拟练习数学试题北京卷专题22平面解析几何(填空题部分)(已下线)第1-2章 直线与圆(附加篇:参数方程)(单元培优)-2021-2022学年高二数学课后培优练(苏教版2019选择性必修第一册)(已下线)第六章 三角(压轴题专练)-单元速记·巧练(沪教版2020必修第二册)
名校
解题方法
4 . 在三棱锥
中,下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
A.若![]() ![]() |
B.若G为![]() ![]() |
C.若![]() ![]() ![]() |
D.若三棱锥![]() ![]() |
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2020-12-04更新
|
1812次组卷
|
7卷引用:2021年北京大学基础学科招生考试数学试题
2021年北京大学基础学科招生考试数学试题江苏省常州高级中学2020-2021学年高二上学期期中数学试题北师大版(2019) 选修第一册 必杀技 第三章 2.2 课时2 空间向量的数量积(已下线)第02讲 空间向量基本定理(教师版)-【帮课堂】(已下线)习题 3-2福建省莆田市第五中学2023-2024学年高二上学期月考(一)数学试卷 (已下线)专题02 空间向量基本定理及其坐标表示压轴题(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)
名校
5 . 已知函数
.
(1)若曲线
在
处的切线与
轴平行,求
;
(2)已知
在
上的最大值不小于
,求
的取值范围;
(3)写出
所有可能的零点个数及相应的
的取值范围.(请直接写出结论)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8854951afdedd866aa87f3514d67e35b.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-12-04更新
|
631次组卷
|
6卷引用:2020届北京市朝阳区六校高三四月联考数学(B卷)试题
19-20高一·浙江杭州·期末
名校
解题方法
6 . 若对任意使得关于x的方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
有实数解的
,
,
均有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3478f3aa8d81012b3348df339165334.png)
,则实数r的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915813c1a26a8378a3fb9d70c1f2cffc.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/a3478f3aa8d81012b3348df339165334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a2b6c7a4a484da63e18aec5b9026f7.png)
A.1 | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2020-11-30更新
|
450次组卷
|
4卷引用:2017年北京大学优特(U-Test)数学试题
2017年北京大学优特(U-Test)数学试题(已下线)【新东方】杭州新东方高中数学试卷371浙江省杭州市第二中学2020-2021学年高一上学期期中数学试题(已下线)专题13 用导数研究函数(难点)-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)
名校
7 . 已知
,
.
(Ⅰ)若
在
恒成立,求实数a的取值范围;
(Ⅱ)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294ed75f9d437ffc32235bcb602365c.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/141474ccc99264222f71b286b7a205b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf87d9d48c3de0a5e9f1a70e51a0bef.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c41acefa82be8127e9b338aa45b60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0fb31594f2dc42bcc0a113cea5a560.png)
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2020-11-30更新
|
300次组卷
|
8卷引用:2020年1月中学生标准学术能力诊断性测试诊断性测试文科数学试卷
2020年1月中学生标准学术能力诊断性测试诊断性测试文科数学试卷2020届黑龙江省安达市第七中学高三下学期第一次网络检测数学(理)试卷中学生标准学术能力诊断性测试2019-2020学年高三1月(一卷)数学(文)试题2020年浙江省新高考名校交流模拟卷数学试题(二)陕西省西安市铁一中学2020-2021学年高三上学期第四次月考理科数学试题浙江省名校协作体2019-2020学年高三第一学期第一次联考数学试题(已下线)【新东方】杭州新东方高中数学试卷375(已下线)广东省佛山市第一中学2024届高三上学期第二次调研数学试题变式题17-22
名校
8 . 已知函数
.
(1)求函数
的极值;
(2)证明:当
时,曲线
恒在曲线
的下方;
(3)讨论函数
零点的个数.
参考公式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db43120cc632891762bf783201316f6.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2eff609c6043c2a89a6dd163fe2244.png)
(3)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee7e0fba5abb4193f070f95fc5bbade.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a17290b3b75dfb2324e355cf2f3f4a.png)
您最近一年使用:0次
名校
9 . 已知任意的正整数n都可唯一表示为
,其中
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92a109f29f48ad436c42ecf39e94bd5.png)
,
.对于
,数列
满足:当
中有偶数个1时,
;否则
,如数5可以唯一表示为
,则
.
(1)写出数列
的前8项;
(2)求证:数列
中连续为1的项不超过2项;
(3)记数列
的前n项和为
,求满足
的所有n的值.(结论不要求证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ca3c160eb08349060a309726f75765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489340c9a2d70c00bae13b7018cad448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92a109f29f48ad436c42ecf39e94bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e13e7f28f377a019cb125bb5828da18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e784a7b36813c7cebe42bb8856ae4f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2023f7d7b5bdc3c7e0fc2a00debb3081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bcb936b1197e44381d13b31dbfd8072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ff90c2652820fd6d5740e67767f2348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2672e70cbf461aa960bfc38136a9f657.png)
(1)写出数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe6857b99c7f80dd65b0ebfa6551674.png)
您最近一年使用:0次
2020高三·北京·专题练习
10 . 已知椭圆
的短轴长为2,离心率
,
(1)求椭圆
方程;
(2)若直线
与椭圆交于不同的两点
,与圆
相切于点
,
①证明:
(其中
为坐标原点);
②设
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c83f9e7f57d03304c3d0e51f43aa5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1595aacea3b417196e776cedbefdfca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次