1 . 已知椭圆
:
过点
,且
的离心率为
.
(1)求椭圆
的方程;
(2)设点
,
,
是椭圆上关于
轴对称的两点,
交椭圆
于另一点
,
是椭圆的左焦点,求
的内切圆半径的取值范围;
(3)若斜率为
的直线与椭圆
相交于
,
两点,且
中点
恰在抛物线
:
上.记
的横坐标为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee65ea60792c6c4aad98ce15d05756f.png)
(3)若斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f437b25c78ffd3a63817ca1938eca9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b35985d5c22a637a518fa1e87f1d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
您最近一年使用:0次
名校
解题方法
2 . 已知数列
中,
,且
.
(1)求证:数列
是等比数列,并求
的通项公式;
(2)设
,
,其中
,若对任意
,总有
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3afbead92b3c7af1764514cee4885176.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7d94406136605c5bc9cd9295d6c9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969ac69def5eb1b0e3cb5b0da956e341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b2d0225e3e37975026b9150b8c3217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a54da56300aa0ca6d860e7dab876e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f4ee9f2ac6e032f19afa201fd6f7480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
3 . 大衍数列来源于《乾坤谱》中对易传“大衍之数五十”的推论,主要用于解释中国传统文化中的太极衍生原理,数列中的每一项都代表太极衍生过程.已知大衍数列
满足
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d750dec24950faed06ff897eea327be.png)
A.![]() |
B.![]() |
C.![]() |
D.数列![]() |
您最近一年使用:0次
2023-01-04更新
|
1065次组卷
|
3卷引用:山东省德州市第一中学2022-2023学年高二下学期6月月考数学试题
名校
解题方法
4 . 已知
是直角三角形,
是直角,内角
、
、
所对的边分别为
、
、
,面积为
,若
,
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09f33a31918252a9bc10dc159a532e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b72ddd7de598464a37b10f03f67b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2865594c03cd3cfcbf3216cdbf08fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4d62cb70f7003dc8f452100f6adc43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1715fa2244d0fccb94fdcd8c54f4b51b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-04-03更新
|
2591次组卷
|
7卷引用:山东省青岛第五十八中学2023届高三一模数学试题
山东省青岛第五十八中学2023届高三一模数学试题福建省2022届高三诊断性检测数学试题(已下线)2022年高考考前20天终极冲刺攻略(三)【数学】(新高考地区专用)(5月31日)(已下线)数学-2022年高考押题预测卷03(新高考卷)(已下线)重难点05五种数列通项求法-3(已下线)黄金卷06(已下线)广东省深圳市深圳中学2024届高三下学期二轮一阶测试数学试题
名校
5 . 若数列
满足
,
,若对任意的正整数都有
,则实数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dce68d0ae71a65c5d3285eb21a05b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162c0897cdfa67cac5b49becac685e75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-10更新
|
1113次组卷
|
6卷引用:山东省烟台第一中学2022-2023学年高二下学期入学摸底测试数学试题
山东省烟台第一中学2022-2023学年高二下学期入学摸底测试数学试题山东省济宁市第一中学2022-2023学年高二上学期期末数学试题2020届浙江省金华市金华十校高三11月模拟考试数学试题浙江省金华市义乌市2019-2020学年高三上学期一模试题浙江省台州市书生中学2020-2021学年高二上学期起始考试数学试题(已下线)专题07 等差数列与等比数列-2020年高考数学母题题源全揭秘(浙江专版)