若函数f(x)=x3-
x2+2x-5,则
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905d061a2a5eeb3a6a259d92f8ba92f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b69a3ab22dd0e91ec8471b1f07d6d7c.png)
A.![]() | B.![]() | C.![]() | D.9 |
更新时间:2016-12-04 06:38:25
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【知识点】 利用导数解决实际应用问题
相似题推荐
单选题
|
较易
(0.85)
【推荐1】某莲藕种植塘每年的固定成本是3万元,每年最大规模的种植量是15万斤,每种植1斤莲藕,成本增加1元,销售额
(单位:万元)与莲藕种植量
(单位:万斤)满足
,要使销售利润最大,每年需种植莲藕( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5aa38e3b6cf539214dc4de1d94328e.png)
A.12万斤 | B.10万斤 | C.8万斤 | D.6万斤 |
您最近一年使用:0次
单选题
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较易
(0.85)
【推荐2】如图
的导函数的图象,现有四种说法:
![](https://img.xkw.com/dksih/QBM/2016/5/30/1572654580285440/1572654586265600/STEM/5fa7b244d4164ff9a060bb3a37691fed.png)
(1)
在
上是增函数;
(2)
是
的极小值点;
(3)
在
上是减函数,在
上是增函数;
(4)
是
的极小值点;以上正确的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://img.xkw.com/dksih/QBM/2016/5/30/1572654580285440/1572654586265600/STEM/5fa7b244d4164ff9a060bb3a37691fed.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a0d9d78aa4b75eed4c4e7c5a80897f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32df158dd2d590af5646657afb0101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405741735c6bfbbbfcb52ae03069b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0ff4fe45a85e9f13a758e3e7aff157.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
A.(1)(2) | B.(2)(3) | C.(3)(4) | D.(4) |
您最近一年使用:0次