已知函![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
,若
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ab34b3aeae149bd972356016a1a49e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7879a8ed952af120f4f81d717c6cd39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-12-29 02:06:27
|
【知识点】 已知分段函数的值求参数或自变量解读
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单选题
|
适中
(0.65)
名校
【推荐1】已知函数
,若存在
,
,使得
,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0593fe698c784bae865c2d5b1ccf0b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9a83b8605be6f99ae5318e7efedbe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f162452a6f7b28f3f6ad945d2e2836c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2037b0bad7c7a312bac1ac0653d9a491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐2】函数
,若实数
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc63d229662c458f3abe7133c6afbac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4249eeb7550db3269d8b4d6761aecc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdfd4b3516ccabae0354b3aeb1fa0da.png)
A.2 | B.4 | C.6 | D.8 |
您最近一年使用:0次