设函数
,且
,则
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3f0b7ece04d4d60117b69e803081b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7bdeae6ec2977904b59b7bc0b7a487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd29b2e8192d673308bdf8d5cb6cab.png)
更新时间:2017-03-13 01:54:15
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【知识点】 对数的运算