1 . 若
,则
._____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d36d2633119c6176229061d3dc23a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13baaa9276c276ab24b3310050ce79f7.png)
您最近一年使用:0次
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解题方法
2 . 已知
,
,
,则
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051eb86f1c889ff58a9862a2430ce485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d15b871b0fd9a112312d5e81ccf97326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5635268e292b3ad54acbe50abd187530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
您最近一年使用:0次
解题方法
3 . 若
,则
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca24341509c05e672999202f2df0ebaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2ffdd4e0b0d5fb79a1c7d5dcc70168.png)
您最近一年使用:0次
解题方法
4 . 若
,则
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca24341509c05e672999202f2df0ebaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91dbf5ee09b127a4aa225908e29f37c.png)
您最近一年使用:0次