1 . 有限数列
:
,
,…,
.(
)同时满足下列两个条件:
①对于任意的
,
(
),
;
②对于任意的
,
,
(
),
,
,
,三个数中至少有一个数是数列
中的项.
(1)若
,且
,
,
,
,求
的值;
(2)证明:
,
,
不可能是数列
中的项;
(3)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
①对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937c09d82c480e4d67f8a48d3f66c5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431acf301f0cf1e414b532de94708474.png)
②对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247bf9c5c1ad2b3e50952ec92afa3ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f52783e7a39f438adf08ef7d05d8c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8343838b2f9943d83231763b2078136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be0f858adaefa50f7c99e6062fdf2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ad229a63bc75abfa8f5a48fe99038f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3859890e300f470dcf4a215249da07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2021-11-19更新
|
1230次组卷
|
10卷引用:2015届北京市海淀区高三下学期期中练习(一模)理科数学试卷
2015届北京市海淀区高三下学期期中练习(一模)理科数学试卷(已下线)北京市第四中学2022届高三下学期(三模)保温练习数学试题(已下线)北京市第四中学2023届高三数学保温测试试题北京市北京师范大学第二附属中学2019-2020学年高二上学期期中数学试卷北京市第五十七中学2019-2020学年高二上学期期中考试数学试题重庆市缙云教育联盟2022届高三上学期第O次诊断性检测数学试题北京卷专题18数列(解答题)北京市十一学校2022届高三下学期2月诊断数学试题北京市第八中学2024届高三上学期10月练习数学试题北京市汇文中学教育集团2023-2024学年高三下学期开学考数学试题
名校
2 . 已知函数
,
.
(1)已知函数
在
取得极小值,求
的值;
(2)讨论函数
的单调区间;
(3)当
时,若存在
使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f5d6c6d42ca2ac86343ca2ababc732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b70f8691af2a1d287aa5c476ede5e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03cacfebdb18fa71e4f87c70d35ebc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b27b4a9c01b0bfe586ffb7ed4bcce36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-11-07更新
|
357次组卷
|
3卷引用:北京市人大附中2018届高三高考数学(理科)零模试题
3 . 若无穷数列
满足:存在
,并且只要
,就有
(t为常数,
),则称
具有性质T.
(Ⅰ)若
具有性质T,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
,
,
,
,
,求
;
(Ⅱ)若无穷数列
的前n项和为
,且
,证明存在无穷多个b的不同取值,使得数列
具有性质T;
(Ⅲ)设
是一个无穷数列,数列
中存在
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90ebf18a8aee259cf6bf7778bc3df00.png)
.求证:“
为常数列”是“对任意正整数
,
都具有性质T”的充分不必要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ca8d0d3e86377d4c0bac29ed965673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7470822f9249a37ddfa08070b0ccdd83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e282bd5d2b5b47ba7ffeff419cfbf405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302f9a8d9c619ccc8e6f063abfc49c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b38f675ce932688113f1c19af7da939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1928c254cfada1f75a5cd1e34db5a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2da0ff9dc73d62f8162fc3de186150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ba808c24aeae6a2f34b98ae5ec04ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061fcc2cd084a6bf55aae0d57e6f9dd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
(Ⅱ)若无穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7077e1039cd3fca42c3c1661f4baf0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅲ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ca8d0d3e86377d4c0bac29ed965673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90ebf18a8aee259cf6bf7778bc3df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bc2b05dc79b18ecb4ac3f9b5c492d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
名校
4 . 已知函数
.
(1)若
,求函数
的图像在点
处的切线方程;
(2)若函数
有两个极值点
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39792d7ba691a800c0294329a7a08dc8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574a6aac7f2adbef0a047dbdde43a0ea.png)
您最近一年使用:0次
2020-10-10更新
|
305次组卷
|
7卷引用:北京市第四中学2018届高三第一次模拟考试(一模)仿真卷(A卷)文科数学试题
5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec47cf76452e6167f06a369c5b171b7f.png)
.
(1)讨论函数
的极值点的个数;
(2)若
有两个极值点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261c0899711077922ca479c99ffe2fef.png)
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec47cf76452e6167f06a369c5b171b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30aa3954054926017cb81e5f2cd122b7.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261c0899711077922ca479c99ffe2fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9490a94eb75198d47e94a4169521326b.png)
您最近一年使用:0次
2020-02-01更新
|
2841次组卷
|
15卷引用:北京市第八十中学2021届高三考前练习数学试题
北京市第八十中学2021届高三考前练习数学试题2020届云南省楚雄州高三上学期期末考试数学(理)试题2020届安徽省安庆市上学期高三期末数学(理科)试题2020届甘肃省白银市靖远县高三上学期期末联考数学(理)试题2020届河南省名校(南阳一中、信阳、漯河、平顶山一中四校)高三3月线上联合考试数学(理)试题安徽省皖西南联盟2019-2020学年高三上学期期末数学(理)试题(已下线)专题09 恰当分类,搞定函数中参数讨论题(第一篇)-2020高考数学压轴题命题区间探究与突破(已下线)专题21 函数与导数综合-2020年高考数学(理)母题题源解密(全国Ⅲ专版)(已下线)考点53 利用导数求极值与最值(练习)-2021年高考数学复习一轮复习笔记(已下线)专题02 导数(文)第三篇-备战2020高考数学黄金30题系列之压轴题(新课标版)甘肃省天水市第一中学2020-2021学年高三第八次模拟数学(理)试题福建省华安县第一中学2022届高三上学期期中考试数学试题福建省福清市一级达标校2023届高三上学期期中联考数学试题四川省隆昌市第七中学2022-2023学年高三上学期10月考试理科数学试题江西省南昌县莲塘第一中学2020-2021学年高二3月质量检测数学(文)试题
名校
6 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a8b10e80a1a0b2ad9d7485a7da12e8.png)
(1)若函数
在x=1时取得极值,求实数a的值;
(2)当0<a<1时,求
零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a8b10e80a1a0b2ad9d7485a7da12e8.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当0<a<1时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2020-05-15更新
|
1411次组卷
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9卷引用:【区级联考】北京市东城区2019届高三第二学期综合练习(一)数学(文)试题
【区级联考】北京市东城区2019届高三第二学期综合练习(一)数学(文)试题北京市东城区2018-2019学年度第二学期(4月)高三综合练习一数学文科【全国百强校】北京市清华大学附属中学2019届高三下学期第一次模拟考试数学(文)试题黑龙江省牡丹江市第一高级中学2020-2021学年高三上学期开学考试数学(文)试题安徽省固镇县第一中学2018-2019学年高二5月月考数学(文)试题河南省商丘市第一高级中学2019-2020高二下学期期中考试数学(理)试卷广东省广州市越秀区培正中学2019-2020学年高二下学期期中数学试题安徽省六安中学2019-2020学年高二下学期期中数学(理)试题吉林省长春市第二十九中学2021-2022学年高三上学期第二次质量检测数学(文)试题
名校
7 . 设
为正整数,各项均为正整数的数列
定义如下:
,
(1)若
,写出
,
,
;
(2)求证:数列
单调递增的充要条件是
为偶数;
(3)若
为奇数,是否存在
满足
?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c711c10f22bfbcc9e1b961020a06d41.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
(2)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15ffa7fecea3704dc892ea8cd513c59.png)
您最近一年使用:0次
2020-01-12更新
|
619次组卷
|
4卷引用:北京市中关村中学2020届高三数学统练试题
名校
8 . 给定整数
,数列
、
、
、
每项均为整数,在
中去掉一项
,并将剩下的数分成个数相同的两组,其中一组数的和与另外一组数的和之差的最大值记为
. 将
、
、
、
中的最小值称为数列
的特征值.
(Ⅰ)已知数列
、
、
、
、
,写出
、
、
的值及
的特征值;
(Ⅱ)若
,当
,其中
、
且
时,判断
与
的大小关系,并说明理由;
(Ⅲ)已知数列
的特征值为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f27f84764f1cca89ce3d93fc1cf603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c001a6e4b0d343b19d786540023d56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0529548612b545c590f3c34748dadda2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd301c81a6c61e69a253be6f33d2b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596afe6f8149e39c53d36a759bee6151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5955cdc67877bd65a9e5459136068f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ab1256702aef4e9f1a5eb6c12ecc96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbd67f60f04c278bdd867fdb3979dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b54eb70b245565d24b1ef62ba3eae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd301c81a6c61e69a253be6f33d2b8b.png)
(Ⅰ)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea20f2594f7a698164e725362f08938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ab1256702aef4e9f1a5eb6c12ecc96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbd67f60f04c278bdd867fdb3979dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a34aea9f11eb0421ff2b6b576a4823d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5002f030017f6f0b34a61b2e15c5a9cb.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a661a06d098000ecda9b7014bdef5c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a601ca47cb4e4c34cd3f3ca690c545bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce11c144e2432591134625c58983977e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b71af6590f0f369c164a054a8b63bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056320894da587b21690aba61e49a064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a3de213023385be927c374aa405c4f.png)
(Ⅲ)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd301c81a6c61e69a253be6f33d2b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aadf9ab510510120699c5eee39ab18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b1c95617bbb9f526f72a615ae41c0d.png)
您最近一年使用:0次
2020-01-10更新
|
813次组卷
|
11卷引用:北京市海淀区2019-2020学年高三上学期期末数学试题
北京市海淀区2019-2020学年高三上学期期末数学试题(已下线)专题03 拿高分题目强化卷(第三篇)-备战2021年新高考数学分层强化训练(北京专版)北京市北京理工大学附属中学2024届高三下学期三模数学试题(已下线)专题02 过“三关”破解数列新情境问题 (第三篇)-2020高考数学压轴题命题区间探究与突破北京市一七一中学2022届高三8月第一次月考数学试题北京市第五十七中学2023届高三上学期开学考试数学试题北京市广渠门中学2023届高三上学期10月月考数学试题北京市中关村中学2023届高三上学期10月月考数学试题北京市景山学校2024届高三上学期开学考试数学试题北京二中2021—2022学年高二上学期学段考试数学试题(已下线)2021年新高考北京数学高考真题变式题16-21题
解题方法
9 . 已知椭圆
的长轴长是短轴长的2倍,A,B分别为椭圆的左顶点和下顶点,且
的面积为1.
(1)求椭圆C的方程;
(2)设点M为椭圆上位于第一象限内一动点,直线
与
轴交于点C,直线
与
轴交于点D,求证:四边形
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c12554ea6a204ca31e9c9a7bfc41be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
(1)求椭圆C的方程;
(2)设点M为椭圆上位于第一象限内一动点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2020-03-16更新
|
250次组卷
|
2卷引用:2023年普通高等学校招生全国统一考试模拟(北京卷)数学试题
名校
解题方法
10 . 从抛物线
上任意一点
向
轴作垂线段垂足为
,点
是线段
上的一点,且满足
.
(1)求点
的轨迹
的方程;
(2)设直线
与轨迹
交于
两点,点
为轨迹
上异于
的任意一点,直线
分别与直线
交于
两点.问:
轴正半轴上是否存在定点使得以
为直径的圆过该定点?若存在,求出符合条件的定点坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a56d8e6d9d353d8342a0f20b5ac834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a57ae03eeb34c2a36750191cf8efe5.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bfab3a03f094c8dd8ac08d6dedba108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2562b2fd0b8d62a9fe17ecdc99bac750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
2020-03-16更新
|
1109次组卷
|
9卷引用:2019届北京市中国人民人大附属中学高三(5月)模拟数学(文)试题
2019届北京市中国人民人大附属中学高三(5月)模拟数学(文)试题【市级联考】广东省广州市2019届高三第二次模拟考试数学(文)试题广东省广州市2019届高三普通高中毕业班综合测试(二)文科数学试题湖南省长沙市雅礼中学2019-2020学年高三上学期第一次月考数学(文)试题2020届湖南省长沙市雅礼中学高三上学期月考试卷(一)文科数学试题2020届福建省福州第一中学高三上学期期末数学(文)试题(已下线)专题02 求轨迹方程问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖福建省莆田第一中学2019-2020学年高三上学期期中考试数学(文)试题湖南省湘南教研联盟2019-2020学年高二上学期第一次联考数学试题