题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025106-66663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025106-50013.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025106-66663.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:∵
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025117-10257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025117-93440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025118-42952.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025118-63127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025118-96249.png)
点评:对于线性的递推式求通项公式时,往往构造等比数列,利用等比数列通项公式求解即可
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025057-58193.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025057-43165.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025057-24219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025058-51102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025058-82110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025058-33285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010025059-59070.png)
A.0 | B.3 | C.8 | D.11 |
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024929-32284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024929-77809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024930-54183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024930-69647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024930-88594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024930-58227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024854-19918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024854-79011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024855-86631.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024854-19918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024854-79011.png)
(Ⅱ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024855-68814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024855-52051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024835-42497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024835-48471.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024836-85232.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024836-38495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024836-91421.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024835-42497.png)
(Ⅱ) 求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024836-15500.png)
(Ⅲ)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024837-74857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024837-77911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024837-95957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024816-17050.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024816-23134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024817-97586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024817-16068.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024817-58525.png)
(2)证明数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024817-87621.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024818-52054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024818-36273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010024818-30651.png)
最新试题
- 1如图为氯化铵和硫酸钠的溶解度曲线。下列说法中不正确的是( )A.30 ℃时,氯化铵、硫酸钠的溶解度相同B.氯化铵的溶解
- 2下列词语中加点的字,每对读音都不相同的一项是( )(3分)A.伶俜/聘礼纰漏/分泌瞥见/蹩脚祛除/曲尽其妙B.梦魇/赝
- 3在《验证机械能守恒定律》的实验中,质量m为1.0kg的重物自由下落,带动纸带打出一系列的点,如图所示.相邻计数点间的时间
- 4***说:“现在我们能造什么?能造桌子椅子,能造茶碗茶壶……但是,一辆汽车、一架飞机、一辆坦克、一辆拖拉机都不能造。”毛
- 5过椭圆x26+y25=1内的一点P(2,-1)的弦,恰好被点P平分,则这条弦所在直线方程( )A.y=53x-56B.
- 6–There is _______ on using mobile phones at the gas station.
- 7中国工农红军第一支坚强的队伍是[ ]A.中国工农革命军 B.中国工农红军第一军C.中国工农红军第二军 D
- 8在一根软铁棒上绕有一组线圈(电阻不能忽略),a、c是线圈的两端,b为中心抽头,把a端和b抽头分别接到两条平行金属导轨上,
- 9一元二次方程的根是A.B.C.D.
- 10(25分)城市既是人类文明的核心区域,又是文明进步的前沿地带。阅读材料,回答问题。材料一 工业革命以前的传统城市与王权、
热门考点
- 1下列不是配位化合物的是[ ]A.六氨合钴(Ⅲ)配阳离子[Co(NH3)6]3+B.硝酸二氨合银(I)[Ag(NH
- 2从岸边看水中的鱼,看到“鱼”的位置与实际位置不同。下列模型能解释此现象的是( )
- 3强电解质和弱电解质的本质区别是( )A.导电能力B.相对分子质量C.电离程度D.溶解
- 4已知a1,a2,a3,a4,是非零实数,则“a1a4=a2a3”是“a1,a2,a3,a4,成等比数列”的( )A.充
- 5在分析电路时,通常不考虑电压表和电流表对电路的影响,对电压表来说,是忽略了它的______作用.象这种为了使复杂的问题简
- 6小明见妈妈买了些取暖袋,他很好奇,打开了一袋,发现里面是黑色的粉末。那么,取暖袋里是什么物质在发生反应、释放热量呢?【查
- 7唐太宗、武则天、唐玄宗三人治理国家时共同注意的问题是[ ]A、善于纳谏B、轻徭薄赋C、重用人才D、减轻刑罚
- 8方程的解是 .
- 9In terms of history, Australian cuisine(烹饪)was on the basis
- 10实验室有四个药品橱,已存放如下药品,实验室新购进一些纯碱,应将它存放在( )橱甲橱乙橱丙橱丁橱药品氢氧化钠、氢氧化钙硝