给出定义在
上的三个函数:
,已知
在
处取最值.
(1)确定函数
的单调性;
(2)求证:当
时,恒有
成立;
(3)把函数
的图象向上平移6个单位得到函数
,试确定函数
的零点个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb14876fa43ba72f47fcc4bb444826a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(1)确定函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d1916f8c7feddcfda0b7fdf8b97773f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc772b3f4d035850734778304004b59.png)
(3)把函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a1d31d9bce31128c3baa9819cd2daf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5758f756932dbe27d5b976fcb9a808.png)
2010·湖南·一模 查看更多[3]
更新时间:2016-11-30 04:09:45
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