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1 . 侏罗纪蜘蛛网是一种非常有规律的蜘蛛网,如图,蜘蛛网是由无数个正方形环绕而成的,且每一个正方形的四个顶点都恰好在它的外边最近一个正方形四条边的三等分点上,设外围第1个正方形的周长是m,第n个正方形的周长为
,侏罗纪蜘蛛网的长度(蜘蛛网中正方形的周长之和)为
,则下面选项中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
2 . 某种抗病毒药品对新型冠状病毒具有抗病毒作用,假如规定每天早上7:00和晚上7:00各服药一次,每次服药量700毫克具有抗病毒功效,若人的肾脏每12小时从体内滤出这种药的
,该药在人体内含量超过1000毫克就将产生副作用,若人长期服用这种药会不会对人体产生副作用( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a848997ebad9bfdb900899a467ca8240.png)
A.不会 | B.会 | C.与服药时间有关 | D.不能确定 |
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3 . 已知数列
中,
,且
,则
( )
![](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/ae604f86a3cc9e72ff082f0e382ef878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知数列
中,
,
,
,那么数列
的前
项和等于( )
![](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/d9afb0bb52be6b7b40004eb8767f5fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f6000421c5370e4b89f23be199f388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-03更新
|
1647次组卷
|
4卷引用:2014-2015学年辽宁省实验中学分校高二上学期期末考试理科数学试卷
名校
解题方法
5 . 数列
的前n项和为
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5995ed803c917b995c197681464f2570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-04更新
|
857次组卷
|
2卷引用:辽宁省实验中学2018届高三上学期期中考试数学(理)试题
2014·甘肃张掖·三模
解题方法
6 . 已知定义在
上的函数
是奇函数且满足
,
,数列
满足
,且
,(其中
为
的前
项和),则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d201eeaf2699e406371e61f9f2c34e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5caa9e83cd3d45945c03bfe8494e5bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe7bdaaf8b0adf10bf2ef6c1255b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8061e75c2c249ad9d6a5ea93053a9f02.png)
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9487cdac8f0ae138a80cbcc41987e9f3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10-11高二·辽宁铁岭·阶段练习
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7 . 如果数列
满足
是首项为
,公比为
的等比数列,那么
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2b112a312c6c8ed2cf9cd4f9eeb1fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-01-30更新
|
241次组卷
|
3卷引用:2011-2012学年辽宁省开原高中高二第一次考试数学
2011·辽宁·模拟预测
8 . 程序框图如图所示,将输出的a的值依次记为
,
,…,
,其中
且
.则数列
的通项公式为( )
![](https://img.xkw.com/dksih/QBM/2011/3/29/1570085018656768/1570085023547392/STEM/ceccce429e2d44f9ab682a5603732494.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8676904179cba2add222b11be24fc9d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://img.xkw.com/dksih/QBM/2011/3/29/1570085018656768/1570085023547392/STEM/ceccce429e2d44f9ab682a5603732494.png?resizew=131)
A.![]() | B.![]() | C.![]() | D.![]() |
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