1 . 已知数列
满足
,
,设
,记数列
的前2n项和为
,数列
的前n项和为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6366b220c131ac65460fac87ae02280c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314501f06c7e4bf3112fe41ecac7be68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-04-14更新
|
867次组卷
|
4卷引用:重庆市九龙坡区2023届高三二模数学试题
重庆市九龙坡区2023届高三二模数学试题江西省寻乌中学2022-2023学年高二下学期期中数学试题福建省永定第一中学2023-2024学年高二上学期期中模拟考试数学试题(已下线)模块四 期中重组篇(人教B版高二下内蒙古)
2 . 已知椭圆C:
的离心率为
,左、右焦点分别为
,
,过
的直线
交椭圆于M,N两点,交y轴于P点,
,
,记
,
,
的面积分别为
,
,
.
(1)求椭圆C的标准方程;
(2)若
,
,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b4e519edd226ae594e06558776bbd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6dfc3a311cbd89946d617d60990821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa9aa4d3c268f8adb343baf7e6c2b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9946d1ce220afa1625ebb09c34b56c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed0ccdab6cfb38a35f9dea720df03c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
(1)求椭圆C的标准方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/206f1cbd5f64a6308c1fda75d5724e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5f48a73f44bccda2d2c75a38d2748f.png)
您最近一年使用:0次
3 . 已知直线l:
与x轴相交于点A,过直线l上的动点P作圆
的两条切线,切点分别为C,D两点,则直线CD恒过定点坐标为___________ ;记M是CD的中点,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abd1ceef6e219ee7dfa3f72f3014e92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54329a84abb204cecb237b2bf2ff2bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ffbd97467518d309bffa46df98f3fd4.png)
您最近一年使用:0次
名校
4 . 已知函数
,函数
.
(1)当
时,求
的单调区间;
(2)已知
,
,求证:
;
(3)已知n为正整数,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624c57b1f3b48da21ad42f731df63083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b4864cc35e7ca0f6b84cee90908700.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c67a7e28dba059006021a2e2105f538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9edcb5933175c8b9b4db558b6cb85e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0527a896aec4a245945e5edee00deed.png)
(3)已知n为正整数,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a6d836bd7e64f8015d6fa40dab117d.png)
您最近一年使用:0次
2023-04-14更新
|
1367次组卷
|
6卷引用:重庆市九龙坡区2023届高三二模数学试题
重庆市九龙坡区2023届高三二模数学试题湖北省天门市2023届高三下学期5月适应性考试数学试题吉林省白山市抚松县第一中学2023届高三第十次模拟预测数学试题(已下线)模块八 专题11 以函数与导数为背景的压轴解答题(已下线)模块六 专题8 易错题目重组卷(重庆卷)(已下线)广东省佛山市2024届高三教学质量检测(一)数学试题变式题17-22
名校
解题方法
5 . 经过坐标原点O的直线与椭圆C:
相交于A,B两点,过A垂直于AB的直线与C交于点D,直线DB与y轴相交于点E,若
,则C的离心率为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23687e716c770979123d059048b18370.png)
您最近一年使用:0次
2023-04-03更新
|
1019次组卷
|
3卷引用:重庆市育才中学校2023届高三4月诊断模拟数学试题
名校
解题方法
6 . 已知在
中,角A,B,
所对的边分别为
且
,
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7132c2d8b2ff504e6c2ba36c4f6dcfaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/359ddfad91ff2e81cb0c728c2c9edd4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2888481afd63ac64ffd3e4192fae96fe.png)
A. ![]() ![]() | B. ![]() |
C. ![]() | D.该三角形的面积为![]() |
您最近一年使用:0次
2023-03-13更新
|
1251次组卷
|
14卷引用:重庆市育才中学2021届高三下学期4月二诊模拟数学试题
重庆市育才中学2021届高三下学期4月二诊模拟数学试题海南省海南中学2019-2020学年高一下学期期中考试数学试题山东省泰安市宁阳县第一中学2020-2021学年高一下学期第一次月考考试数学试卷江苏省宿迁市沭阳县修远中学2020-2021学年高一下学期第二次月考数学试题山东省菏泽市巨野实验中学2021-2022学年高二上学期开学考试数学试题北师大版(2019) 必修第二册 金榜题名 进阶篇 二十三 正弦定理(已下线)5.5 正余弦定理(精练)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)江苏省盐城市响水中学2021-2022学年高一创新班下学期开学考试数学试题(已下线)6.4.1 正余弦定理(精练)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)专题2.5 利用正、余弦定理解三角形-2021-2022学年高一数学北师大版2019必修第二册第九章 解三角形 章节练习(已下线)重难点专题01 正弦定理与余弦定理-2022-2023学年高一数学重难点题型分类必刷题(人教B版2019必修第四册)吉林省长春市新解放学校2022-2023学年高一下学期第一次月考数学试题(已下线)第四章 三角函数与解三角形(测试)
7 . 已知双曲线
过点
,且
的渐近线方程为
.
![](https://img.xkw.com/dksih/QBM/2022/5/10/2976412481830912/2986275827286016/STEM/2ed43030-f133-43ca-b094-eb28e940ed4c.png?resizew=180)
(1)求
的方程;
(2)如图,过原点
作互相垂直的直线
,
分别交双曲线于
,
两点和
,
两点,
,
在
轴同侧.
①求四边形
面积的取值范围;
②设直线
与两渐近线分别交于
,
两点,是否存在直线
使
,
为线段
的三等分点,若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8433fa35fe8b2290d314a7024971085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72e841eeae5dd9fb1de630abf3a8cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6bb019e2d7c6d17d15ec4d9043f5e6.png)
![](https://img.xkw.com/dksih/QBM/2022/5/10/2976412481830912/2986275827286016/STEM/2ed43030-f133-43ca-b094-eb28e940ed4c.png?resizew=180)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)如图,过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
①求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
②设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
2022-05-24更新
|
3273次组卷
|
10卷引用:重庆市育才中学2022届高三二诊模拟(二)数学试题
重庆市育才中学2022届高三二诊模拟(二)数学试题八省八校(T8联考)2022届高三下学期第二次联考数学试题(已下线)数学-2022年高考押题预测卷01(江苏专用)(已下线)专题6 圆锥曲线硬解定理 微点2 圆锥曲线硬解定理综合训练(已下线)必刷卷03-2022年高考数学考前信息必刷卷(新高考地区专用)(已下线)专题23 圆锥曲线中的最值、范围问题 微点2 圆锥曲线中的范围问题吉林省长春市十一高中2022-2023学年高二上学期第三学程考试数学试题辽宁省辽阳市辽阳县第一高级中学2023届高三上学期1月月考数学试题(已下线)重难点突破17 圆锥曲线中参数范围与最值问题(八大题型)浙江省金华市第一中学2023-2024学年高二上学期期末数学试题
名校
8 . 已知函数
,其中
.
(1)讨论函数
的单调性;
(2)证明:
是函数
存在最小值的充分而不必要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b695b7e9dd0db67b14a1ff0bf0f4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2022-04-01更新
|
945次组卷
|
3卷引用:重庆市育才中学2022届高三二诊模拟(二)数学试题
名校
9 . 已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)当
时,
恒成立,求
的值;
(3)当
,
时,
恒成立,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f96ec440456a7717e95d5072b7cd0f7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48adb8a59b5c02fad5eada1b35171cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dd18467feea8eb478f4669a32c2d57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b08f5fa971bb6852cf15acd85ea3061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f6df7c2507c2b54c1303055a16d2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2022-02-28更新
|
764次组卷
|
3卷引用:重庆市育才中学2022届高三二诊模拟(一)数学试题
名校
解题方法
10 . 已知函数f(x)=
+x
x,(a
R).
(1)当a=0时,求f(x)的最小值;
(2)在区间(1,2)内任取两个实数p,q(p
q),若不等式
>1恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614f0201ff2aca07bbaf48fa99c99ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f96225e32b613c4182160b4fe0e6e34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
(1)当a=0时,求f(x)的最小值;
(2)在区间(1,2)内任取两个实数p,q(p
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411837b4b3078d05b43cb0439259a362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885c602dbed982eff41cb29891261f4c.png)
您最近一年使用:0次
2022-02-10更新
|
631次组卷
|
2卷引用:重庆市育才中学2022届高三上学期一诊模拟(三)数学试题