已知等差数列{an}的首项为
,公差为d,其前n项和为
,若直线y=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
x+m与圆(x-2)
+y
=1的两个交点关于直线x+y-d=0对称,则数列
的前10项和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921ef5abce73648e3834140df9a72aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921ef5abce73648e3834140df9a72aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
A.![]() | B.![]() | C.![]() | D.2 |
2018高三·全国·专题练习 查看更多[1]
(已下线)5-5 数列的综合应用(高效训练)-2019版导学教程一轮复习数学(人教版)
更新时间:2019-01-03 20:36:32
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相似题推荐
单选题
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适中
(0.65)
解题方法
【推荐1】等差数列
的前n项和为
,公差为d,
,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0906f5e33ccec3d0366ef88ed133bb.png)
A.若![]() ![]() | B.若![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
【推荐2】设等差数列
的前n项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f68eacf72e830ba2684e7f65745c8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://img.xkw.com/dksih/QBM/2018/1/9/1856686123835392/1857498211622912/STEM/510e6a5e6ef2407c9c9355759cc6824f.png?resizew=95)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f68eacf72e830ba2684e7f65745c8a.png)
A.12 | B.8 | C.20 | D.16 |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐1】设
为函数
的值域中所有元素的个数(
为不超过x的最大整数,如
).若数列
的前n项和为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c66703e7d08ae72eb60b5a5afdd079d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551910c8b02d8508338c99928c2047a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc5542ee5d884b2118084fce76f4c97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4b5a382f920203b9ef307224ae641e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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适中
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解题方法
【推荐2】已知数列
满足
,
,令
,则数列
的前2024项和
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f33f87bae8ce93469d3eaaa73c0368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4cecbdebeb5d12fbe1d54b81cc05a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780019495df34d40fff9d8f31bbf3e74.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次