1 . 植树节来临,某学校数学活动小组在坐标纸上为学校的一块空地设计植树方案如下:第
棵树种植在
处,其中
,当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2daf36ad4ddf78b095228e1c003667f7.png)
其中
表示非负实数
的整数部分,如
,
.按此方案,求第2011棵树种植点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e3f1081151daa0af235075ab308216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dfa6f231905a70ea7341fad5c2616ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c972cbd63decec197aec1bdc306de67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2daf36ad4ddf78b095228e1c003667f7.png)
其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd4c9186a6f95dd1679f5e82c9cdecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c1d9e664277dad907229c532200204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2cf6d5f49845653ea64ab4d9d67c9bb.png)
您最近一年使用:0次
2011·广东·一模
2 . 已知数列
中,
,
,其前
项和
满足
,令
.
(1)求数列
的通项公式;
(2)若
,求证:
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1928c254cfada1f75a5cd1e34db5a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8131199b3b463755d5baa885f6034aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d005409790b3192705a181b2c8e7dfed.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37a2adb69dc49bb586de6477a1e36aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759a53715d899d41640f77968728160b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
您最近一年使用:0次