名校
解题方法
1 . 设二次函数
,其图像过点
,且与直线
有交点.
(1)求证:
;
(2)若直线
与函数
的图像从左到右依次交于 A,B,C,D四点,若线段
能构成钝角三角形,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225705de8bb0a3e08619e73c7f0c49be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af31a8d791f28399fc13be3250136dc.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1508daa783a4587860a1578e0bb332b.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af31a8d791f28399fc13be3250136dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd713a9809d5df1de33c6f11b81eca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b467455ea6b8b7f5e6dd53110bc22060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
您最近一年使用:0次