设
,若
,则![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625454592/STEM/544a605c4117464ab1144e8eba918f45.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625454592/STEM/8380b155cc9642e283e77fff6435fe21.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625454592/STEM/aa083fc20ef147f8818a3533a37f2e23.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625454592/STEM/544a605c4117464ab1144e8eba918f45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2016-12-04 07:06:04
|
【知识点】 利用导数解决实际应用问题
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【推荐2】某商场从生产厂家以每件20元的价格购进一批商品,若该商品零售价定为
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