已知实数
满足
且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a004547477e9a36ccf8e7a4e65d74e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead2d84f44d15afd79c6410078da36a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7260a18008048695970e768bb9a323dd.png)
A.![]() | B.![]() | C.![]() | D.2 |
更新时间:2024-01-31 09:16:43
|
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单选题
|
较易
(0.85)
【推荐1】已知a,b,c是三个不全相等的实数且满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8627e8e8d56e652abe5914f7d741b3f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae24688d4c45aad43e9af0b7bbfda6b.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐1】若集合
至多含有一个元素,则
的取值范围是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81e01c7e451c8da628707136eafd24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】若
,
是方程
的两个根,且
,则
的值为.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435b90b7777aceb27835feaa846d61d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82fb9edcbcd89b96ec054d3d44671ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.1或![]() | C.![]() | D.1 |
您最近一年使用:0次