题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040643-18361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-39984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-74039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-84135.png)
(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-48224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-16752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-89068.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040645-39330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040645-62245.png)
(3)令
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040645-68787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040645-96767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040646-21504.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040646-25084.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040646-38753.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040646-56696.png)
解析
试题分析:(1)由
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-74039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040646-20398.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040647-44889.png)
所以数列{
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040647-96965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-48224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-16752.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040647-97153.png)
(2)由(1)知
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040647-34338.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040648-56049.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040645-62245.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040648-34508.png)
(3) 由(2)知
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040648-16474.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040649-13136.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040649-13883.png)
点评:解本小题关键是利用
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040649-73832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040647-44889.png)
从而得到{
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040647-96965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-48224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040644-16752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040647-97153.png)
(2)再(1)的基础上,可求出
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040648-56049.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040645-62245.png)
(3)求出
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040649-77128.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040632-83761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040632-41104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040632-61921.png)
A.58 | B.88 | C.143 | D.176 |
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040623-72939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040623-99314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040623-48441.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040623-77825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040623-72939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040624-61387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040623-72939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040624-38396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040624-58860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040624-58965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040624-49995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040624-38396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040625-67496.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040624-38396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040625-15132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040625-87210.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040610-53832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040610-31918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040610-56604.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040611-20929.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040611-50486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040611-25306.png)
(Ⅰ)写出
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040611-50698.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040610-53832.png)
(Ⅱ)记
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040612-94313.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040612-13473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040610-31918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040612-94313.png)
(Ⅲ)若数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040612-41653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040612-52930.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040612-63987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040612-41653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040549-10713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040550-44367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040550-74617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040550-30872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040550-24276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040551-20957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040551-59117.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040549-10713.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040551-50558.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040551-24233.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040557-59239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040550-44367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040551-24233.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040446-21238.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010040446-57219.png)
A.15 | B.30 | C.31 | D.64 |
最新试题
- 1下列各句中,加点的成语使用恰当的一句是(3分)A.河西的房价已普遍逼近每平方米5000元,不少二期工程比一年之前的一期每
- 2为下面消息的拟一个精当的标题。(不超过20个字)(2分)中共十七届六中全会闭幕一周后,官方于25日公布了该会议通过的《中
- 3“中国专制说”。阅读下列材料,结合所学知识,回答问题:材料一:近四十年来,……普遍的有一种误解,以为在民国成立以前,几千
- 4若函数在[-1,2]上的最大值为4,最小值为m,且函数在上是增函数,则a=____.
- 5句型转换。1. When he was 8,he began to learn to skate. (改为同义句)
- 6在平面直角坐标系xOy中,二次函数y=-x2+(m-1)x+4m的图象与x轴负半轴交于点A,与y轴交于点B(0,4),已
- 7This pair of shoes_______ too big, can I try another____?A.i
- 8阅读下面这首词,完成题目 (4分)蝶恋花【宋】 柳永伫倚危楼风细细,望极春愁,黯黯生天际。草色烟光残照里,无言谁会凭阑意
- 9若函数f(x)=x3-3x-a在区间[0,3]上的最大值、最小值分别为M、N,则M-N的值为
- 10雌雄_______,_______受精,卵生。受精必须在_______完成。
热门考点
- 1如果奴隶胆敢对主人说,你不是我的主人,他的耳朵就要被剁掉。此规定出自于[ ]A.《汉谟拉比法典》B.《古兰经》C
- 29的算术平方根是 ( )A.3B.3C.± 3D.81
- 3读我国某地“峰丛、峰林和孤峰”剖面图,回答下列各题小题1:图中所表示的地形地貌景观主要分布在A.玄武岩分布区B.石灰岩分
- 4化石燃料是不可再生的能源,下列不属于化石燃料的是 [ ]A.煤 B.石油 C.乙醇 D.天然气
- 5***在给蔡元培的信中说:“……孙中山先生联俄、联共与农工政策,行之于1925年至1927年之第一次大革命而有效,国共两
- 6计算:sin45°tan30°-tan60°+cos45°cos30°.
- 7在第二周期中,B、C、N、O四种元素的第一电离能由大到小排列顺序正确的是( )A.I1(O)>I1(N)>I1(C
- 8如图,容器A左侧是可平行移动的活塞。向A中充入1molX的1molY,向B中充入2molX和2molY,起始时A、B的体
- 9将下面的几个短句组合成一个长单句(可适当增加词语),做到保留全部信息。(3分)(1)中央电视台将从明天起播出一部30集电
- 10我国“神州六号”载人飞船,按预定轨道饶地球70多周,共飞行300多万千米后成功着陆,用科学记数法表示300万千米为(