名校
1 . 已知
,命题
:
,命题
:函数
在
上存在零点.
(1)若
是真命题,求
的取值范围;
(2)若
,
中有一个为真命题,另一个为假命题,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317361ec33303a893c8ca0a39d1ebc41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42275cae0afffd2adf8be30ecb3d73ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-11-25更新
|
422次组卷
|
4卷引用:浙江省丽水市三校联考2023-2024学年高一上学期12月月考数学试题
名校
2 . 已知函数
.
(1)若
时,不等式
恒成立,求实数
的取值范围;
(2)若关于
的方程
有三个不同的实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46cbf249f801e849be4b1218c2e3ef59.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309943bf7f9aa14e0425d4313150177b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde61bd1a36e9e5e78a814ea76027992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf01f1b48c9b85ddaeb9e8e0b32601f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2022-06-23更新
|
789次组卷
|
3卷引用:浙江省丽水市2021-2022学年高二下学期普通高中教学质量监控(期末)数学试题
3 . 已知函数
,
,
.
(1)若函数
存在零点,求
的取值范围;
(2)已知函数
,若
在区间
上既有最大值又有最小值,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b9b1d29604d6123345f0950d88fa58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb82dce5907b307dafe426ef26dde9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9829ad49f32fb73dbde8d1d18ab3308e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e46c887599e769d04d03eda66d030e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb1ed40a8f67e93401e544284ceaaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d6a738d2fe0a72fb2462cfc61ccf64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
4 . 已知函数f(x)=x2+ax+b,实数x1,x2满足x1∈(a-1,a),x2∈(a+1,a+2).
(Ⅰ)若a<-
,求证:f(x1)>f(x2);
(Ⅱ)若f(x1)=f(x2)=0,求b-2a的取值范围.
(Ⅰ)若a<-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0e7bfbd56fe73dfe04c04da749d942.png)
(Ⅱ)若f(x1)=f(x2)=0,求b-2a的取值范围.
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