1 . 设函数
,
.
(1)若
,求不等式
的解集;
(2)若函数
恰有三个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6193d3d2bd94faad3d573f967b2aee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2021-05-05更新
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2卷引用:江西省上饶市2021届高考二模数学(理)试题
名校
2 . 已知函数
,且方程
有三个不同的实数根
,
,
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/811027cedc4784c628c4b515eccaa75c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bacde908aec2c313978fc4309d82bc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:江西省上饶市铅山县第一中学2020-2021学年高一(自招班)上学期联考数学试题
3 . 已知函数
,若函数
有唯一零点,则a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af84809a66463dc1172b992924110f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2卷引用:江西省上饶市横峰中学2020届高三下学期高考适应性考试数学(理)试题
4 . 已知定义在
内的函数
满足
,当
时,
则当
时,方程
的不等实数根的个数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4cff510b81f7160ec53b7ef179f114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c2144f528df436d5e2458f91a1e76f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2c153b5d12fc09bc49937f71a9e26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fc98bca76509a7cb0649db42bff147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3468b99be2cbbbb1da565ec4e541f656.png)
A.3 | B.4 | C.5 | D.6 |
您最近一年使用:0次
2016-12-04更新
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2卷引用:【全国百强校】]江西省上饶市横峰中学2019届高三考前模拟考试数学(理)试题