题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113000-48762.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113000-99099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113000-95017.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113000-99099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113000-99099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113001-89616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113001-40972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113012-22151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113012-58669.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113012-80143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113012-99746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113013-81634.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113000-99099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113013-77095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113013-33398.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113013-18940.png)
(Ⅱ)由(Ⅰ)可得
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113013-33071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113012-22151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113014-21967.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113014-25077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113014-26234.png)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113013-81634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113014-12205.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113013-81634.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112946-12556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112947-35484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112946-12556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112940-10904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112941-78063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112941-45713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112941-57218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112941-22383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112942-15618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112926-66550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112926-77959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112926-66550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112926-55247.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112926-66550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112926-55247.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112927-18043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112927-13552.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112927-83232.png)
已知公差不为0的等差数列{
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112917-10431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112917-15649.png)
(1)求数列{
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112917-10431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112918-15631.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112918-79410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112918-13464.png)
(3)在第(2)问的基础上,是否存在
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112918-35591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112919-86446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112919-15885.png)
已知等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112856-68385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112856-25635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112856-83878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112856-57587.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112856-68385.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112857-51102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112856-25635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012112857-34958.png)
最新试题
- 1杂合子的准确含义是[ ]A.不同种生物杂交产生的后代B.个体杂交产生的后代 C.由含相同遗传因子的配子结合成的合
- 2【题文】下列各句中,没有语病的一句是( )A.当代表委员审议政府工作报告时,他们可能没有想到,中
- 3化学为人类提供了更多的生活、生产资料。下列做法利用了化学变化的是A.蒸馏海水获取淡水B.施用二氧化碳气体提高大棚蔬菜产量
- 4读“部分国家人均耕地的比较图”和“我国土地利用类型的构成图”,完成下题。小题1:关于我国土地资源特点的叙述,正确的是(
- 5判断正误,正确的写T,错误的写F。 Susan is a little girl. She is five y
- 6(本小题满分10分)如图,在平面直角坐标系中,点A、B、C、P的坐标分别为(0,1)、(-1,0)、(1,0)、(-1,
- 7如图所示,阴影部分的面积S是h的函数(0≤h≤H),则该函数的图象是( )A.B.C.D.
- 8下列有关细胞膜的功能的叙述中,最能体现细胞膜结构特点的是[ ]A.选择透过性B.主动运输C.保护作用D.胞吞和胞
- 9电磁铁的磁性有无可以由______ 来控制,电磁铁的磁性强弱可以由______ 来控制,电磁铁的南
- 10某施工单位计划用地砖铺设正方形广场地面ABCD(如图所示),广场四角白色区域为正方形,阴影部分为四个矩形,四个矩形的宽都
热门考点
- 1The Wilsons live in ______A-shaped house near the coast . It
- 2把下列结构按由小到大的结构层次排列,正确的是( )A.组织→细胞→器官→系统→人体B.器官→细胞→组织→植物体C.基因
- 3已知函数,.若函数的零点为,函数的零点为,则有( )A.B.C.D.
- 4David is taller than _____ in his class.[ ]A. any studen
- 5下列4种金属中,有1种金属的盐溶液能分别与另外3种金属发生反应,则这种金属是[ ]A.AgB.CuC.FeD.M
- 6如图,有一圆柱体高为10cm,底面圆的半径为4cm, AA1、BB1为相对的两条母线,在AA1上有一个蜘蛛 Q,QA=3
- 7设斜率为2的直线l过抛物线y2=ax(a≠0)的焦点F,且和y轴交于点A,若△OAF(O为坐标原点)的面积为4,则抛物线
- 8下面是一组按规律排列的数:1、2、4、8、16、……,则第2009个数是[ ]A.B.C.D.
- 9一质量为M的探空气球在匀速下降,若气球所受浮力F始终保持不变,气球在运动过程中所受阻力仅与速率有关,重力加速度为g,现欲
- 10补写出下列名句名篇中的空缺部分。(1)苔痕上阶绿,_____________、_____________。(刘禹锡《陋室