名校
1 . 已知函数
,
若函数
有唯一零点,则以下四个命题中正确的是______ (填写正确序号)
①.
②.函数
在
处的切线与直线
平行
③.函数
在
上的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98131575287a657de08ed48b01bf47d6.png)
④.函数
在
上单调递减
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c7f1e39193d489ba9d84a69f6b222d.png)
若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df49341b57eb107f416a014903ce25a8.png)
①.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b0b55c45b53aacd2d0821f1c2d4707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e431329beacff3d91446ee41bec9e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5b49f7ae023d75c6ca5c8d1ee7847b.png)
③.函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c52c43041b2557db8e2404023223758f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52bbda9d02c42aeeb33cc4e24a47a6ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98131575287a657de08ed48b01bf47d6.png)
④.函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109b27aa6458214a65419e3c098960b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
您最近一年使用:0次
名校
2 . 如图所示,边长为1的正方形网络中粗线画出的是某几何体的三视图,则该几何体的体积为
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/a9165ac5-0ec6-4d6f-8c8d-b12c5fc46aca.png?resizew=176)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/a9165ac5-0ec6-4d6f-8c8d-b12c5fc46aca.png?resizew=176)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次