名校
1 . 设函数
,
.
(1)若
,当
时,
单调递增,求a的取值范围;
(2)若
是
的一个极大值点.
(i)当
,求b的取值范围;
(ii)当a是给定的实常数,设
,
,
是
的3个极值点,问是否存在实数b,可找到
,使得
,
,
,
的某种排列
,
,
,
(其中{
,
,
,
}={1,2,3,4}依次成等差数列?若存在,求所有的b及相应的
;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5276a5529d1465204e0441d39548ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73254f32b6da29ecc32df2e9f87a4c97.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
(ii)当a是给定的实常数,设
![](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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c41e90dcab6783fff43f03390ef298.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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e5ee0eaeb1b74999cc0a9a9f244545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f208cee1885a263ae371c7d46189b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388563dca8b69e2a6692002db3d37670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2a0e1fa9705b6a52072bbb69eac386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5f59bc23cf55f56312c9ed9806371f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6af9e7b1c23db5584ad8521d4444d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef259280a3e7fc0425fc9d6d7c5b8484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fde28a4345a8add444647ffebc46bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
您最近一年使用:0次
名校
2 . 已知
是等差数列,
,存在正整数
,使得
,
.若集合
中只含有4个元素,则
的可能取值有( )个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9f36d47028f9d4b304325087dc54bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a209e3616d7a6464d56a73cbffc88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7738602d47c8f7eb327ded726f52219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/127d13984c5b304e7992a8567eb33570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
2021-12-06更新
|
1826次组卷
|
7卷引用:上海市建平中学2022届高三上学期12月月考数学试题
上海市建平中学2022届高三上学期12月月考数学试题(已下线)专题4-1 三角函数性质、最值和w小题归类-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)专题1-1 集合题型归类-2(已下线)考点6-1 等差数列(文理)上海交通大学附属中学2024届高三上学期10月月考数学试题山东省济宁市第一中学2024届高三下学期3月定时检测数学试题山东省济宁市第一中学2024届高三下学期4月质量检测数学试卷
名校
解题方法
3 . 已知数列
,其中
.
(1)若
满足
.
①当
,且
时,求
的值;
②若存在互不相等的正整数
,满足
,且
成等差数列,求
的值.
(2)设数列
的前
项和为
,数列
的前n项和为
,
,
,若
,
,且
恒成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32037f9c276fd7be08fd7e6719f3737.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
②若存在互不相等的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aedb7b216cb72510968939850b24050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f6d423ac8d9936c1c7b193c28d1c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84db9790882c0cdc3276ade3f6f16588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912c6cdcb3fa703c8bdec96aa9a19f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.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/45675b702a235e6f18709a2a0c0b8281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2019-01-23更新
|
1229次组卷
|
4卷引用:【市级联考】江苏省盐城市、南京市2019届高三年级第一次模拟考试数学试题
【市级联考】江苏省盐城市、南京市2019届高三年级第一次模拟考试数学试题2019届江苏省无锡市第一中学高三下学期2月期初考试数学试题2019届江苏省南京市、盐城市高三第一次模拟数学试题(已下线)专题6.1 数列的概念与简单表示法(练)-江苏版《2020年高考一轮复习讲练测》