题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040148-60372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040149-66876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040148-60372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040149-98466.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040149-79147.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040149-42067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040149-25497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040150-92068.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040150-37671.png)
解析
试题分析:设等比数列的公比为q,则
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040150-83970.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040149-42067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040149-25497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040150-92068.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040150-37671.png)
点评:
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040150-55122.png)
核心考点
举一反三
(Ⅰ)求数列{an}的通项; (Ⅱ)求数列{
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040143-55801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040133-28433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040133-52683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040134-59058.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040134-64044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040134-17683.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040133-28433.png)
(Ⅱ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040134-46556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040134-48498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-11586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-87593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-18607.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-96547.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-42358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-35476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-95307.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-11586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-42358.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-76462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040122-60491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040121-87593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040122-69498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040122-48741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040109-18548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040109-69576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040109-56758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040109-23342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040110-19574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040110-10884.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040110-47675.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040103-65727.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040103-38385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040103-85970.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040103-49491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015040104-85430.png)
A.9 | B.8 | C.7 | D.6 |
最新试题
- 1With the help of the computer, information can ______ every
- 2下列各角中,是第三象限的角为( )A.-480°B.2π3C.720°D.450°
- 3阅读材料,完成下列问题。材料一沪汉蓉高速铁路,全长2078千米,由上海出发,途经南京、合肥、武汉、重庆等城市,到达成都。
- 4读青藏地区图,回答下列问题。(1)写出图中字母代表的地理事物名称:山脉:C_______,D__________,E__
- 5空气中最多的物质是( )A.氧气B.二氧化碳C.氮气D.稀有气体
- 6读下图的省区,位于我国第三级阶梯的是 [ ]A.①②B.②③C.③④D.①③
- 7What do you like ______ England?[ ]A. about B. from C.
- 82011年的《政府工作报告》强调,各级政府要广泛动员和组织群众依法参与社会管理,发挥社会组织的积极作用,完善社会管理格局
- 9计算:.
- 10巴西农产品中,产量居世界第一位的有[ ]A、小麦,玉米,大豆 B、羊毛,牛肉,奶酪 C、咖啡,甘蔗,柑橘 D、水
热门考点
- 1国家最高科学技术奖是中国科技界的最高荣誉,设立至今已有22位科学家获得此项殊荣。翻阅历届大师的先进事迹,不难发现,他们的
- 2现代计量史学运用计算机对大量资料进行统计分析并建立数学模式。口述史学通过录音机记录下大众见证的历史经历。这些新兴史学的兴
- 3解不等式组,并把解集在数轴上表示出来。
- 4某学生在测试1500米跑时,他在前1分钟内通过400米,在中间3分钟内通过800米,在最后1分钟内通过300米.则该生在
- 5下列加点字读音全不相同的一组是A.比较校对学校锱铢必较犯而不校B.调和和谐和面一团和气一唱一和C.诱哄起哄弘扬哄堂大笑肱
- 6作文。(65分)请以“又闻那一缕馨香”为题目,写一篇文章。(60分)要求:①要写出自己真实的体验和感悟,不得抄袭;②除诗
- 7已知点P(1,2),Q(4,6),那么与PQ反向的单位向量是______.
- 8设f(x)=x3+mx2+nx,(1)如果g(x)=f′(x)-2x-3在x=-2处取得最小值-5,求f(x)的解析式;
- 9若-6a=4.5,则( )=-1.5,这是根据等式的性质,在等式两边同时( )。
- 10A、B两地果园分别有苹果20吨和30吨,C、D两地分别需要苹果15吨和35吨;已知从A、B到C、D的运价如下表:(1)若