解题方法
1 . 设函数
.
(1)当
时,解不等式
;
(2)若
,则
在闭区间
上有实数解,求实数
的取值范围;
(3)若函数
的图象过点
,且不等式
对任意
均成立,求实数
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21248b0f3d3ae1495574a88181d20db8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6818d478d5712c1b33034da904d69985.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61c9a7ed0961f8977a21dab37aab396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b28776c37c352e4beb47a11a3420f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facb8c43b7857be3ceb72cce699e4686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19195d1adf801090bcdc5d48b4b8554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c229aec38946b710076588b7710381c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
名校
2 . 已知
中,函数
的最小值为
.
(1)求A的大小;
(2)若
,方程
在
内有一个解,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2ef65d99f2d01f650aa479dc33e396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
(1)求A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baed295316ba77f37dd1c459e925a616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f20a1fad4ad463807c3740c5a2719be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91d87dd51a8e24e3134d2d1e5410a856.png)
您最近一年使用:0次
2022-06-13更新
|
1510次组卷
|
4卷引用:山东省济南市2021-2022学年高一下学期5月联合考试A卷数学试题
3 . 已知△ABC中,函数
的最大值为
.
(1)求∠A的大小;
(2)若
,方程
在
内有两个不同的解,求实数m取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c45e51e69073a6c1d54190963c23466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(1)求∠A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/027241fa73324cf05bd97285cb67a763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f20a1fad4ad463807c3740c5a2719be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336496c3471c109b4b8e7e9f66cf7c96.png)
您最近一年使用:0次