题目
题型:不详难度:来源:
A.11元 | B.12元 | C.13元 | D.14元 |
答案
解析
根据利润=每件利润×销售量,可得销售利润y=(x﹣8)•[100﹣10(x﹣10)]=﹣10x2+280x﹣1600=﹣10(x﹣14)2+360,
∴当x=14时,y的最大值为360元,
∴该商人应把销售价格定为每件14元,可使每天销售该商品所赚利润最多.
故选D.
核心考点
试题【某商人如果将进货单价为8元的商品按每件10元出售时,每天可销售100件,现在他采用提高售价,减少进货量的办法增加利润.已知这种商品每件销售价提高1元,销售量就要】;主要考察你对函数的相关概念等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112647-88020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112647-86620.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112648-66676.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112648-21920.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112647-88020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112648-61007.png)
A.403 | B.402 | C.401 | D.201 |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112512-87380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112512-35062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112512-64038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112512-38930.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112501-54470.png)
(1)计算
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112501-36648.png)
(2)若关于
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112502-88064.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112502-77111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112502-87778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112502-54161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112450-55464.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112450-32605.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112450-44911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112450-27868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112451-42468.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112451-58173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112451-89138.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112450-44911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112451-93183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112451-93183.png)
(3)求实数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112450-44911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112451-64198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112452-26253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112452-17895.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112432-75079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112432-80698.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112432-75079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112433-93166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112433-34798.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112433-87621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112433-77879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112432-75079.png)
对一切
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112434-40671.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204112434-61457.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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