若一元二次方程
有两个相等的实数根,则
的值是___________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415e1b0e7b9183faa90a912253a6970f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2016-12-05 21:11:19
|
【知识点】 根据一元二次方程根的情况求参数解读
相似题推荐
填空题
|
较易
(0.85)
【推荐1】平面直角坐标系
中,抛物线
与
轴只有一个交点,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76270ea787f15cc9b19559772c3f188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
填空题
|
较易
(0.85)
【推荐2】已知
和
均是以x为自变量的函数,当
时,函数值分别是
和
,若存在实数m,使得
则称函数
和
符合“特定规律”.已知函数
与
符合“特定规律”,则a应满足的条件为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d16f64a59df5e26a5b379497d9e13d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb8d4c953bf02ef7e7120a91f1967b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d596ea8abbf1a41b55bc8e74c81f4473.png)
您最近一年使用:0次