名校
解题方法
1 . 已知函数
恰有两个零点
,
和一个极大值点
,且
,
,
成等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b029ff1ec707abd0d2a14b9a3d4c2082.png)
__________ ;若
的解集为
,则
的极大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b269dce1ae3396d2afc82a91dc6f97ba.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/90aa505e4e41dd4becc7e55d2e938f7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b029ff1ec707abd0d2a14b9a3d4c2082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85db4f72795b4a150a734d835ffbd913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c253ea436c94f88bd5a3ddb799ef30ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2022-10-11更新
|
1119次组卷
|
5卷引用:福建省漳州市第三中学2022-2023学年高二下学期期中数学试题
2 . 将一个数列中部分项按原来的先后次序排列所成的一个新数列称为原数列的一个子数列,如果数列存在成等比数列的子数列,那么称该数列为“弱等比数列”.已知
,设区间
内的三个正整数
,
,
满足:数列
,
,
,
为“弱等比数列”,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72e056edc8ce492ccbaaacaeaa7cb1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8cc0b4997cae4d8aec791a1d3923314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32bd3ea56596730917cd797c963072a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51d60c9e444ef2d7705c3c6bee3efe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e1fbe0fb49725cf6d1e689ee8986d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb59638769faa7d399f622c03ee3674f.png)
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2020-02-14更新
|
968次组卷
|
2卷引用:江苏省南通市海安高级中学2021-2022学年高三上学期期中模拟数学试题
名校
3 . 已知递增的等差数列{an}的首项a1=1,且a1、a2、a4成等比数列.
(1)求数列{an}的通项公式an;
(2)设数列{cn}对任意n∈N*,都有
+…+
=an+1成立,求c1+c2+…+c2014的值
(3)若bn=
(n∈N*),求证:数列{bn}中的任意一项总可以表示成其他两项之积.
(1)求数列{an}的通项公式an;
(2)设数列{cn}对任意n∈N*,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31451cd32725ea067ca65f8919748a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7df63be4f44032b7c7b2716cb5cbd3.png)
(3)若bn=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed9925a0e08120e9d2d7846cbc45bc5.png)
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名校
4 . 已知
,
都是各项为正数的数列,且
,
.对任意的正整数n,都有
,
,
成等差数列,
,
,
成等比数列.
(1)求数列
和
的通项公式;
(2)若存在p>0,使得集合M=
恰有一个元素,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30052c54892789bc548374412730ede4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be85b6de3f99238545d0c51b4c79433e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49b4835c4cd402232ba87fd8a9295d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95931effbd59c43e8ed1ea09962b84f.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若存在p>0,使得集合M=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ff54cc58af803b3ec302829a4eef59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2018-12-12更新
|
843次组卷
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2卷引用:【全国百强校】江苏省南师大附中2019届高三年级第一学期期中考试数学试题