设函数
,方程f(x)=x有唯一的解,
已知f(xn)=xn+1(
)且f(xl)=
.
(1)求证:数列{
)是等差数列;
(2)若
,求Sn=b1+b2+b3+…+bn
(3)在(2)的条件下,是否存在最小正整数m,使得对任意
,有
成立,若存在,求出m的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524dc5705d02486d3c65b8b61e7e8f3e.png)
已知f(xn)=xn+1(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b221d7a057f8ee4a029ac0164022db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0e7bfbd56fe73dfe04c04da749d942.png)
(1)求证:数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a3cefbd102e6bdbfc6330e3e599666.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68167cdc71817afdd46bbde959b47f15.png)
(3)在(2)的条件下,是否存在最小正整数m,使得对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b221d7a057f8ee4a029ac0164022db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1346892d59d5818aa4e7e269d44746d.png)
2012·安徽淮北·一模 查看更多[1]
(已下线)2012届安徽省淮北市高三第一次模拟考试文科数学
更新时间:2016-12-01 13:50:55
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适中
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解题方法
【推荐1】已知数列
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(2)记
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解答题-问答题
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适中
(0.65)
解题方法
【推荐2】已知数列
前
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的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】记
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(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48dbf04a571772b43a96c95af443326c.png)
(1)求
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(2)设
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【推荐2】已知等差数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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(1)求
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