1 . 吹气球时,记气球的半径r与体积V之间的函数关系为r(V),
为r(V)的导函数.已知r(V)在
上的图象如图所示,若
,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967738290831360/2969853450756096/STEM/cf4206c5-62c8-446c-b9a6-cd3db0f59c58.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73247a362e66773aa89176ca2779384b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb832a0d51069ef5e146ac530d835aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7210b16c18d14f3a3cc74d46e101fe5f.png)
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967738290831360/2969853450756096/STEM/cf4206c5-62c8-446c-b9a6-cd3db0f59c58.png?resizew=161)
A.![]() | B.![]() |
C.![]() | D.存在![]() ![]() |
您最近一年使用:0次
2 . 已知
,
,
在抛物线
上,割线PM的斜率为
,割线QM的斜率为
,抛物线在M处的切线斜率为k,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e26c337b5ca4194d35c36ecd3203b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c27241264a65f4ec627b993ca0d91e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06dfc9e95cade14ae9b7fc89519a2dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1c079afd1b058adc67a50f48f3d466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-11-09更新
|
517次组卷
|
2卷引用:苏教版(2019) 选修第一册 选填专练 第5章 限时小练32 平均变化率