题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012537-16964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012538-41907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012538-26051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012538-83968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012538-96203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012539-48991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012539-23277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012539-29276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012539-30244.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
在等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012537-16964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012540-13697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012540-37263.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012540-87847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012541-63963.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012539-48991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012539-23277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012539-29276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012539-30244.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012541-29939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012540-87847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012541-30008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012541-51507.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012414-58398.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012414-45510.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012414-17820.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012415-32205.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012415-82207.gif)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012414-45510.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012415-82207.gif)
(2)设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012415-84048.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012415-83947.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012415-84048.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012416-20607.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012416-49608.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012406-97957.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012406-72823.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012407-75659.gif)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012406-97957.gif)
(2)令
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012407-29338.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012407-55172.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012407-16672.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012407-91912.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012408-21959.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012245-30490.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012245-29490.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012245-30490.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012245-54536.png)
A.9 | B.18 | C.27 | D.36 |
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012052-45035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012052-75738.png)
A.8 | B.9 | C.10 | D.11 |
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012026-56156.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012027-54742.gif)
(1)若首项
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012027-98781.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012027-90947.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012027-39504.gif)
(2)对于一切正整数k都有
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011012027-39504.gif)
最新试题
- 1用一句话概括下面两段文字所包含的主要信息。(不超过25字) 记者从陕西文物部门了解到,陕西省《关于抢救性发掘秦始皇陵西
- 2如图,一个水平放置的平面图形,其斜二测直观图是△OAB,OB=AB=2,则该直观图所表示的平面图形的面积为( )A.
- 3已知函数,.(1)若函数的值不大于,求的取值范围;(2)若不等式的解集为,求的取值范围.
- 4从下面方框中选择一个适当的词或短语,并用其适当形式填空,并将其正确形式写在答题卡对应位置。danger, swim, p
- 5已知,且的最大值是最小值的倍,则等于( )或 或
- 6【题文】2013年10月31日,墨脱公路通车仪式在西藏林芝地区波密至墨脱县80公里处举行,宣告中国最后一条未通公路的县正
- 7(2014·江西六所重点高中3月模拟)He told a joke about death which I though
- 8阅读理解。 In the forest, there is an elephant and a monkey.
- 9The good-for-nothing graduate’s mind _______ when he learned
- 10有一位同学收集到一枚铜币,铜币上有“中华民国五年”的字样。中华民国五年也就是公元( )A.1912年B.1915年C.
热门考点
- 1(《几何证明选讲》选做题).如图:直角三角形ABC中,∠B=90 o,AB=4,以BC为直径的圆交边AC于点D,AD=2
- 2如图,△ABD≌△CDB,则AB与CD的位置关系是______.
- 3若48-4x=23,则x的值为( )A.3B.32C.34D.38
- 4下面不是由于双耳效应达到的效果的是[ ]A.在大礼堂中说话时能听到回声 B.将双眼蒙上,也能大致确定
- 5为了得到函数y=sin(x-π3)的图象,只需把函数y=sinx的图象( )A.向左平移π3个长度单位B.向右平移π3
- 6关于北方地区边界范围的正确描述是( )A.燕山以南地区B.南以青藏高原边缘为界C.秦岭--淮河以北地区D.季风区与非季
- 7读“长江水系示意图”,回答下列问题。(10分) (1)长江发源于青藏高原上的__________山脉,图中城市①是___
- 8解方程组:x+3y=85x-3y=4.
- 9如图为测定电阻两端电压和通过电阻的电流的电路图,如果某同学在操作中对两只电表的量程选择是正确的,但不慎将两电表的位置对调
- 10梁启超发表《异哉所谓国体问题者》一文是:A.对武昌起义后建立中华民国表示异议B.为清朝专制统治辩护C.反对袁世凯复辟帝制