名校
解题方法
1 . 在圆
内,过点
有
条弦的长度成等差数列,最短的弦长为数列的首项
,最长的弦长为
,若公差
,那么
的取值集合为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8488cc02b3cd29f714dc01b78ae70bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e363060f43dfff14bc41d0249da3de5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8e1cdf603e98a56900c485174db710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-06-04更新
|
894次组卷
|
6卷引用:2011年辽宁省瓦房店市五校高二上学期竞赛数学文卷
名校
2 . 已知二次函数
,当
依次取
时,其图象在
轴上所截得的线段的长度的总和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb8e050f34dede4b1e0db50c964c9eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff0f774d203f8a7533241091bceb37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2011-03-09更新
|
560次组卷
|
2卷引用:2011年辽宁省瓦房店市五校高二上学期竞赛数学文卷