1 . 已知
,则
的值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863ae0c491e93801e5950d0de1118fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3627e4ccde7d69c49034a4a2d10bee5.png)
您最近一年使用:0次
名校
2 . 设函数
,
具有如下性质:
①定义域均为R;
②
为奇函数,
为偶函数;
③
(常数e是自然对数的底数,
…).
利用上述性质,解决以下问题:
(1)求函数
,
的解析式;
(2)证明:对任意实数x,
为定值,并求出这个定值;
(3)已知
,记函数
,
的最小值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
①定义域均为R;
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df412ae6aa217d7eaa8dd3b88faa9b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07d7af2ede4abfa4d647b4058992d00.png)
利用上述性质,解决以下问题:
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)证明:对任意实数x,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c55cc1394290408de681b3e23865ca.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ca0b28769b95d7d7e19fca33db7266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d58567d3cb3137e68b7ff1671cd8433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4b8114fcc770a8512cf03da137ca4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4b8114fcc770a8512cf03da137ca4e.png)
您最近一年使用:0次
解题方法
3 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9e0dcfe20e16312dd0f390fa78529c.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b94c5c7083bb9a8b3f4ed85859850cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9e0dcfe20e16312dd0f390fa78529c.png)
您最近一年使用:0次
4 . 函数
的定义域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d90599e625d09d6e60117ad7c44a705.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 某厂每年生产某种产品x万件,其成本包含固定成本和浮动成本两部分.已知每年固定成本为10万元,浮动成本
若每万件该产品销售价格为40万元,且每年该产品产销平衡.
(1)设年利润为
(万元),试求
与x的关系式;
(2)年产量x为多少万件时,该厂所获利润
最大?并求出最大利润.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74bee6917e75c1d489864f08a90ec11.png)
(1)设年利润为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)年产量x为多少万件时,该厂所获利润
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
6 . 高斯是德国著名的数学家,近代数学奠基者之一,用其名字命名的“高斯函数”为:对于实数
,符号
表示不超过
的最大整数,例如
,
,定义函数
,则函数
的值域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73fea430c1904650fad150397425ca7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239da0d432f374cbd47bbcc3f120bc6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02772feb72b4ef462a2e942714ad8ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2023-11-14更新
|
315次组卷
|
2卷引用:陕西省西安中学2023-2024学年高一上学期期中数学试题
名校
7 . 若函数
的值域为R,则实数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c118590c78cfbca01ecd15b301e7faa.png)
您最近一年使用:0次
2023-11-14更新
|
299次组卷
|
2卷引用:陕西省商洛市柞水中学2023-2024学年高一上学期期中质量检测数学试题
8 . 已知两个函数
和
的定义域和值域都是集合
,其定义如下表:
则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26bbb11e932ddb26a9088e7fc33e87b.png)
x | 1 | 2 | 3 | x | 1 | 2 | 3 | |
2 | 3 | 1 | 1 | 3 | 2 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f565e56f7966eae71a40a93d095fc1.png)
您最近一年使用:0次
2023-11-10更新
|
247次组卷
|
3卷引用:陕西省西安市阎良区关山中学2023-2024学年高一上学期期中数学试题
解题方法
9 . 已知对
,都有
,且当
时,
.
(1)求函数
的解析式,并画出
的简图(不必列表);
(2)求
的值;
(3)求
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3dfb9993f0852e443ea196e974013d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad8ca0dc9a54c3346d495bb66740b6a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/a2c7f897-ab4c-4bb8-adbc-bcaee5e4cbe8.png?resizew=213)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea09ab225081c171f6d54afec5ffaad9.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7da221f28de0d5aa1b62e0d41cab7d9.png)
您最近一年使用:0次
名校
解题方法
10 . 设函数
若对
,
且
,都有
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/458b332d5c56b308b57f6b16e941dae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673207f6b77b8192d25463d071737b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bf60c5e8996d138198fe74f30ce520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f09c0670e752aa71b00f219f374b8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-06更新
|
343次组卷
|
5卷引用:陕西省榆林市五校2023-2024学年高一上学期11月期中联考数学试题