名校
1 . 已知
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f51bf1a0a2ea44ea7c2dee0f68136bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa2f9040beaf00bb249d00faa88dd79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1924f56b98229446c78d7130c64fa5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
12-13高一上·河北邢台·阶段练习
解题方法
2 . 已知
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9330f5a1902fe99fc5edd744fbe9146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767cfdfc8796625c34c590940688f78.png)
您最近一年使用:0次