1 . 已知
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef482ade9b1d7f41d49d3d4d2c413f65.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
2 . 方程
恰有三个实数解,则
等于.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec855c6054bddf2bcda80bc24095274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.0 | B.0.5 | C.1 | D.![]() |
您最近一年使用:0次
3 . 若
有两个不同的实数解
.求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1da5ff5a31a22cd85bf5dbf472fe3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb3f0ed152b8bdd053959d3479d63b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ff89c22de06c89dc0ff933e02631ee.png)
您最近一年使用:0次