题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005631-83638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005632-84066.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005632-84845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005633-81617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005633-91095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005633-90954.png)
(Ⅰ)若某时期美元贬值指数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-61511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005631-83638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005631-83638.png)
(Ⅱ)若该企业加工产品订单的金额为
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005631-83638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-98476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-36541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005631-83638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005633-81617.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-83327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005631-83638.png)
(Ⅱ)当美元的贬值指数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-78067.png)
解析
试题分析:(I)当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-61511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-37394.png)
(II)搞清本小题不会出现亏损,也就是当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-36541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-79554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-61610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-51170.png)
(Ⅰ)由已知
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-61511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-37394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005636-14115.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005636-18230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005636-38386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005636-70296.png)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005636-31380.png)
即加工产品订单的金额
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-83327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005631-83638.png)
··································· 5分
(Ⅱ)依题设企业加工生产将不会出现亏损,则当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-36541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-79554.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-79554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-61610.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-51170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005637-48381.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005637-91232.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005637-65260.png)
可知
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005637-38966.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005637-83554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005638-62511.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005638-87111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005638-70381.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005637-83554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005638-95358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005638-85459.png)
故当美元的贬值指数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-78067.png)
点评:本小题关键是理解实际问题当中的要求如何通过数学方法实现,如企业实际所得加工费随
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005631-83638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005634-36541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005635-79554.png)
核心考点
试题【(本小题满分14分)广东某民营企业主要从事美国的某品牌运动鞋的加工生产,按国际惯例以美元为结算货币,依据以往加工生产的数据统计分析,若加工产品订单的金额为万美元】;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/20200205/20200205005556-99562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005556-69594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005556-91023.png)
(Ⅰ)令
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005556-16154.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005556-40341.png)
(Ⅱ)关于
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-59350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-45741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-73481.png)
(Ⅲ)对于函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-27362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-93936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-59350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005558-97679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005558-80183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005558-72931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005559-48087.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-27362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-93936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005559-82811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005559-15562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-27362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005557-93936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005537-11507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005538-17450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005538-60627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005538-16694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005538-64448.png)
A.恒为负 | B.等于零 | C.恒为正 | D.不小于零 |
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005523-18448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005524-92706.png)
(1)是否存在实数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005524-27333.png)
(2)用单调性定义证明:不论
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005524-27333.png)
(3)若函数f(x)为奇函数,解不等式
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005524-84951.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005513-78807.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005513-41564.png)
(2)当0<a<1时,解关于x的不等式
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005514-82794.png)
(3)当a>1,且x∈[0,1)时,总有
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005514-77843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005452-58494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005452-60755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205005452-92549.png)
A.![]() | B.![]() | C.![]() | D. 0 |
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