1 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35b7df472dcb6645b2d668a80800cfe.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35b7df472dcb6645b2d668a80800cfe.png)
您最近一年使用:0次
2 . 已知
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6850757614efb8a9c9c2c9ec7c9c397e.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a6f362a7f8f972d6b329a882e940d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85cd387ef073772decae903f476f4e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6850757614efb8a9c9c2c9ec7c9c397e.png)
您最近一年使用:0次
10-11高一·山西吕梁·阶段练习
3 . 计算:
=_________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68968d0987aecc346ee94ce661a04b60.png)
您最近一年使用:0次