题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071058-75390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071059-89346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071059-87235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071059-81852.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071059-75127.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071058-75390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071100-51294.png)
(Ⅱ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071100-93145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071059-89346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071100-52225.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071100-94101.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071101-39183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071101-74240.png)
解析
试题分析:(I)利用
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071101-26491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071101-92106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071101-39526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071102-14746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071102-66023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071102-23589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071102-36342.png)
试题解析:(I)当
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071103-27709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071103-42284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071103-58945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071103-87778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071101-92106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071104-99308.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071104-87674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071102-14746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071104-47911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071104-96010.png)
(II)由(I)可知
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071105-12282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071105-76781.png)
上面两式相减:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071105-12889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071105-60085.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071101-74240.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071051-55984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071052-15962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071052-67812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071052-22192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071052-42570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071053-38155.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071053-77425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071040-71413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071040-71287.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071040-16957.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071022-50008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071022-73975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071022-74515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071022-21006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071023-84810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071023-72672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071023-21167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071023-84810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071023-87888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071023-72672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071023-17912.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071023-65252.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071024-37798.png)
(2)若对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071024-22552.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071024-98318.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071024-79327.png)
(3)是否存在正整数
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071024-49497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071025-23760.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071025-44946.png)
的值;若不存在,请说明理由.
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071015-14292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071016-48409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071016-60253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071003-88007.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071004-81271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014071004-37146.png)
最新试题
- 1胎儿通过 、 从母体获得营养物质和氧,并排出废物。
- 2补全对话。A: Where did you go? B: 1. A: It"s not far f
- 3阅读下面短文,写出寓意。 在一个漆黑的晚上,老鼠首领带领着小老鼠出外觅食,在一家人的厨房内,垃圾桶之中有很多剩余的饭菜
- 4对于水平放置的平行板电容器,下列说法不正确的是( )A.将两极板平行错开,使正对面积减小,电容将减小 B.将两极板的
- 5首届中国(北京)国际服务贸易交易会(京交会)于2012年6月1日闭幕,本届京交会期间签订的项目成交总金额达60 110
- 6如图是导函数y=f′(x)的图象,则下列命题错误的是( )A.导函数y=f′(x)在x=x1处有极小值B.导函数y=f
- 7甲型H1N1流感病毒的直径大约是0.000000081米,用科学记数法可表示为( )A.8.1×10-9米B.8.1×
- 8人类在探索自然规律的进程中总结出了许多科学方法,如分析归纳法、等效替代法、控制变量法、理想实验法等。那么在伽利略得出“力
- 9小华为班级设计了一个班徽,图中有一菱形. 为了检验小华所画的菱形是否准确,请你以有刻度的三角尺为工具,帮小华设计一个检验
- 10我国的内蒙古高原、华北平原、大小兴安岭的主要土地利用类型分别是[ ]A.耕地、林地、草地B.草地、耕地、林地C.
热门考点
- 1向FeCl3、CuCl2的混合溶液中加入一定量的铁粉,充分反应后仍有固体存在,则下列判断不正确的是[ ]A.加入
- 22008年5月12日,四川汶川发生了8.0级的强烈地震.灾情十分严重,大批伤者需要输血抢救,当地血库存血供不应求.一方有
- 3The joke the naughty boy _____ his teacher made many people
- 4.It is said that if a mirror is broken for no reasons, bad l
- 5在经济全球化的发展过程中,最直接的推动资本和技术全球化发展的力量是 ( )A.私人资本家 B.银行家C.跨国公司D
- 6Class Two ____ taking their lessons when there was a knock a
- 7电和磁的发现与应用给人类带来了许多便利,但电磁辐射又是无处不在的隐形***手.如果环境中存在强磁场,将影响人体自然规律,引发
- 8我国农村基层干部年龄老化、思想僵化、知识退化的现状严重制约着农村经济社会快速发展。河南省鹤壁市在全国率先实施了“大学生村
- 9如图(甲)所示,金属块所受的浮力为______N;如图(乙)所示,金属块排开水的体积为______mL=______m3
- 10阅读下面的作品,完成小题。野 店 臧克家虽然说是野店,它所依傍的却是大道。几间茅草小屋,炕占去了每间的大半,留下火镰