如果函数
(
且
)的图象经过点
,那么
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74088e31acd9bc94dc8bc34e616bef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081cd41dab0f2a8f84b0e9f1df4843fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.2 | D.4 |
2019高二·北京·学业考试 查看更多[2]
更新时间:2019-10-22 08:55:58
|
【知识点】 求对数函数的解析式
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单选题
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【推荐1】已知对数函数
的图象经过点
与点
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f6e3de3a306307e5f87f8ea81ec7248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efcc616894e956c40a6d7e4829eb80f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4743db89447c2b0d92d7f5defb6b4ad.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】已知对数函数
的图象过点
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec739b80e9b6c8971baf9682ff36cb96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e77df0479d31a9fd61a81b9351696cd.png)
A.-3 | B.1 | C.2 | D.3 |
您最近一年使用:0次