名校
解题方法
1 . 已知
,
均为正数,且
,则
的最小值为__________ .
![](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/020b3f4ed9823e179d1768c082c2a5aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed03a2bde69ccbdddb36e82bafae0f1.png)
您最近一年使用:0次
2017-05-12更新
|
2884次组卷
|
6卷引用:江苏省常州市第一中学2022-2023学年高一上学期期中数学试题
江苏省常州市第一中学2022-2023学年高一上学期期中数学试题江苏省苏锡常镇四市2017届高三教学情况调研(二) (5月) 数学试题天津市第一中学2018届高三上学期第二次月考数学(文)试题(已下线)2017-2018学年第一学期期末复习备考之精准复习模拟题高三江苏版数学试题(C卷)(已下线)2022年高考考前20天终极冲刺攻略(三)【理科数学】(5月31日)(已下线)2.2 基本不等式(第2课时)(分层作业)-【上好课】
2 . 已知椭圆
:
经过点
,离心率为
,点
为椭圆
的右顶点,直线
与椭圆相交于不同于点
的两个点
.
(Ⅰ)求椭圆
的标准方程;
(Ⅱ)当
时,求
面积的最大值;
(Ⅲ)若直线
的斜率为2,求证:
的外接圆恒过一个异于点
的定点.
![](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/6e684712aade8dcebb62716843791034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455bae796d928c3c4d9090e924259628.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5480fb837d606c40567242dad45b818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45b8b000c9c286bff8a480dbf03b513.png)
(Ⅲ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4bfa74832f9ad2afa8bad1135f67540.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2017-03-10更新
|
1416次组卷
|
2卷引用:江苏省常州市前黄高级中学2021届高三下学期学情检测(一)数学试题
3 . 已知数列
(
,
)满足
,
,其中
,
.
(1)当
时,求
关于
的表达式,并求
的取值范围;
(2)设集合
.
①若
,
,求证:
;
②是否存在实数
,
,使
,
,
都属于
?若存在,请求出实数
,
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92676454db896b3761333fe2717bce03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8572a331f30d2b31f8a789a66d0e565c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f4a16760b47e0c3188445c426c5005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f4a16760b47e0c3188445c426c5005.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5646880d6380783634c68d2ddbee2e15.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd82b5223c2a708c1729db2a3750990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70792383ff1c955255afe70b7c9c90c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08048db0a4115538251553b85da3ddfb.png)
②是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca8b26c3ad6d892590290a2304126bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd8a2fbb8ed23a0d23f293b9edb04a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
您最近一年使用:0次
2016-12-03更新
|
1289次组卷
|
3卷引用:2015届江苏省常州市高三上学期期末调研测试理科数学试卷
14-15高二上·江苏常州·期末
4 . 已知
分别是椭圆
的左,右顶点,点
在椭圆
上,且直线
与直线
的斜率之积为
.
![](https://img.xkw.com/dksih/QBM/2014/3/14/1571562638843904/1571562644684800/STEM/3dcdc08794d34afbad6222427b985abd.png?resizew=249)
(1)求椭圆
的标准方程;
(2)点
为椭圆
上除长轴端点外的任一点,直线
,
与椭圆的右准线分别交于点
,
.
①在
轴上是否存在一个定点
,使得
?若存在,求点
的坐标;若不存在,说明理由;
②已知常数
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f67186bc972e0e9f85310b25c2620c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951ad36a52024c2750101c74b13fba78.png)
![](https://img.xkw.com/dksih/QBM/2014/3/14/1571562638843904/1571562644684800/STEM/3dcdc08794d34afbad6222427b985abd.png?resizew=249)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
①在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a10e9c078acc907693e01bab8a29c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
②已知常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f14960982aecfb6056cf13aa7768b6.png)
您最近一年使用:0次