1 . 已知二次函数
在
上的最小值为0,设
.
(1)求
的值;
(2)当
时,求函数
的值域;
(3)若函数
有三个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262077581baf603acf7be972c8afb42e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ed0edaebe95e5347b44806e166d0e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba94b35258a2fbde34d7e26be524fb6e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e05c85caa22a9a75f8a68d84165be977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6408350e3bc6225ebd5ee8da1d17ae98.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2610191317523c88ff5823a7631e9957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
2 . 若
,
是关于
的方程
的两个实数根,且
,
都大于
.
(1)求实数
的取值范围;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a8c53ecac9c5691d1550f865b06f40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fda52d5ebf1461c93a4dd4d7803248b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2019-12-27更新
|
352次组卷
|
5卷引用:安徽省宣城市宁国中学2023-2024学年高一上学期实验班新生入学考试数学试题
安徽省宣城市宁国中学2023-2024学年高一上学期实验班新生入学考试数学试题湖南省长沙市雅礼中学2019-2020学年高一上学期10月月考数学试题河北省石家庄市正定县第一中学2019-2020学年高一上学期开学考试数学试题广西南宁市第三中学2019-2020学年高一上学期期末数学试题(已下线)专题04一元二次方程根的分布-2020年初升高数学无忧衔接(沪教版)
3 . 已知
,
,
,
都是常数,
,
.若
的零点为
,
,则下列不等式正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44cbc322861846709c08c7f1da746848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797dac1abc8e1771377b1143f7b44414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 已知函数是定义域为的偶函数,当时,.
(Ⅰ)在给定的图示中画出函数
的图象(不需列表);
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572326335422464/1572326341525504/STEM/efcafb6ff0644eae898ac965dcf4bae3.png)
(Ⅱ)求函数的解析式;
(Ⅲ)若方程
有两解,求
的范围.(只需写出结果,不要解答过程)
(Ⅰ)在给定的图示中画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572326335422464/1572326341525504/STEM/efcafb6ff0644eae898ac965dcf4bae3.png)
(Ⅱ)求函数的解析式;
(Ⅲ)若方程
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572326335422464/1572326341525504/STEM/ab562180a9bf4f06983dce4a0d30a880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次