已知数列
中任意连续三项的和为零,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5743f7f138dfbaf8ece3db317ce630.png)
(Ⅰ) 求数列
的通项公式;
(Ⅱ)若数列
满足
,求数列
的前
项和
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5743f7f138dfbaf8ece3db317ce630.png)
(Ⅰ) 求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅱ)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc46368d66934797b942324e3bd86af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
2018高三·江苏·专题练习 查看更多[1]
(已下线)《2018届优等生百日闯关系列》【江苏版】专题二 第五关 以子数列或生成数列为背景的解答题
更新时间:2018-04-24 14:23:27
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相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知数列
满足
.
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67fd0eb54561cd1df683a08cf049bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32922a427e9fd3c18ece18f6804dec0.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67fd0eb54561cd1df683a08cf049bfc.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc4c0cc33314b153811251a1fc08aaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】设
,
,…,
,
,是
个互不相同的闭区间,若存在实数
使得
,则称这
个闭区间为聚合区间,
为该聚合区间的聚合点.
(1)已知
,
为聚合区间,求t的值;
(2)已知
,
,…,
,
为聚合区间.
(ⅰ)设
,
是该聚合区间的两个不同的聚合点.求证:存在k,
,使得
;
(ⅱ)若对任意p,q(
且p,
),都有
,
互不包含.求证:存在不同的i,
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d109268e15e8f04f94a6155e9432043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5843978e1e20fb7a901143839741cbf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fac9603f08a2388999d33306b7047b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12100db597992af7e546de75b4d3605b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff40cfd1abdbc307e21f7c8ba502b16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a12c01aaf24489a3285afd2ab6a7bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b54084cc62f8edcc4cce1b1ffb8b13b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7196435048015ab9fa4f9f90caf55e26.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d109268e15e8f04f94a6155e9432043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac4f4a5794941d335325cc5f1dd6a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fac9603f08a2388999d33306b7047b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12100db597992af7e546de75b4d3605b.png)
(ⅰ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725dde58532f70e91baeb9ff90519c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d5b9ef2dcd314f0d85adeb77675558.png)
(ⅱ)若对任意p,q(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d14e88b76e8fbfed5a6b57a9e708fc21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb953277188ba4f8b6511174f4c4081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f392d06cbc33ac357d3478a543ce030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20895209100403cf486bc9413889f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70216275cb366804f695c4cf54b0798f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba4514bef9609e94f709466af7091db.png)
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解答题-问答题
|
较难
(0.4)
【推荐1】已知无穷数列
满足
(
).其中
均为非负实数且不同时为0.
(1)若
,且
,求
的值;
(2)若
,
,求数列
的前
项和
;
(3)若
,
,且
是单调递减数列,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3659e090865f9763677c7351b2f28fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaffec44406a4313cacb06a7b56b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98d10092efc21e76783c0cd5fb5ad38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085b7f021a79ec95dac1f7b56769774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa9bf65189dfb57a61644a1cb27f361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】设数列
,
及函数
(
),
(
).
(1)若等比数列
满足
,
,
,求数列
的前
(
)项和;
(2)已知等差数列
满足
,
,
(
、
均为常数,
,且
),
(
).试求实数对(
,
),使得
成等比数列.
![](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/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03bbcfce2a8c6901741b3644c4c493c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)若等比数列
![](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/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d761c4444f5eac17133caaf19d6b9ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db850e54a545598c4ea061aa6aed9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(2)已知等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aca450cc3b08c269cd1e8bda709083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ad5159a87a8e659d224664ebc46370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45482d31d1d7448c9f3922b4d2a55331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41acb6673a85f7af2f03212e14d5156.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
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