名校
解题方法
1 . 已知函数
,
,(a为常数).
(1)若函数
的图象与x轴交于点
,
,且线段AB的长度为6,求该函数
的解析式;
(2)若函数
的图像不恒在函数
的图像上方,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4373fcf1c86d83da5469961be7ac49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bc17ff3027f8946d3c6f7069e99aef.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40011987a55a60e355651253dcc62ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b2f93f19e8d47c402f8006346c13f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1e128e5ae1acc88eeda44ba5591796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de79c3ff780cff1e77a25696e7e67a0.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5de1268af2c0cb595ddf283a413b600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e867b59b85ac4aeeac3f8791d7ed37.png)
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