题目
题型:不详难度:来源:
已知等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225706-87697.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225706-37795.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225707-70537.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225707-35081.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225707-85597.gif)
(1)试用
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225707-49231.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225707-26497.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225707-69186.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225708-18292.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225706-87697.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225706-37795.gif)
答案
解析
核心考点
试题【(本小题满分13分)已知等差数列的公差为,前项和为,且满足,(1)试用表示不等式组,并在给定的坐标系中用阴影画出不等式组表示的平面区域;(2)求的最大值,并指出】;主要考察你对等差数列等知识点的理解。[详细]
举一反三
已知等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225657-58945.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225657-46046.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225657-86060.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225657-60008.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225657-17411.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225658-48816.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225658-69918.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225658-80323.gif)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225657-58945.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225657-17411.gif)
(2)记
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225658-11197.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225659-95895.gif)
(3)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225659-66275.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225658-48816.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225638-62343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225639-82718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225639-35950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225639-37855.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225639-56023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225639-35950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225639-82718.png)
A.6 | B.7 | C.8 | D.9 |
已知数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225626-85640.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225626-32294.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225626-67651.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225626-99486.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225627-29798.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225626-85640.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225627-68265.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225627-74263.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225627-41680.gif)
(2)求证:数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225627-30094.gif)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225628-33786.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225628-16085.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225628-56160.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225628-43565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225628-47928.gif)
求出
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225628-56160.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225622-77038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225623-33379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225623-73169.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225623-44270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225624-80642.png)
A.72 | B.45 | C.36 | D.18 |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225551-17533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225552-83576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225552-67037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012225552-64963.png)
A.27 | B.28 | C.29 | D.30 |
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