下列式子从左至右变形错误的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2023-07-13 22:18:45
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单选题
|
容易
(0.94)
【推荐1】对于正数x,规定
,例如
,
=
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b190f991a1058e9055f87fbb327b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1939ba2c3e7b3d7abe71f755496170.png)
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A.18 | B.19 | C.20 | D.21 |
您最近一年使用:0次
单选题
|
容易
(0.94)
【推荐2】已知
、
、
、
都是正实数,且
,则
与0的大小关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a5c2e08fc59b440267114a10433b58.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次