名校
解题方法
1 . 在平面直角坐标系
中,已知点
,
,
,其中
.
(1)求
的最小值;
(2)是否存在
,使得
为钝角三角形?若存在,求出
的取值范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b9ee165fff07f902ab60ee54fcb1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938b2936f99671be8499b18602873f8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd0f1e3e3b41948f1b3d287c4b0cb44.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9a7b881dd04ffc14380053ae94f259.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd0f1e3e3b41948f1b3d287c4b0cb44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2021-08-26更新
|
440次组卷
|
3卷引用:重庆市万州第二高级中学2018-2019学年高一下学期期中数学试题
名校
解题方法
2 . 函数
的部分图象如图所示,又函数g(x)=f(x+
).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/9d36ecec-fe03-4fb1-a9d6-458335246302.png?resizew=213)
(1)求函数g(x)的单调增区间;
(2)设
ABC的内角A、B、C的对边分别为a、b、c,又c=
,且锐角C满足g(C)=-1,若sinB=2sinA,,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157996f44e855d53202c80753b48fb83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c487fec20bd809e0baf5cb39afe8979.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/9d36ecec-fe03-4fb1-a9d6-458335246302.png?resizew=213)
(1)求函数g(x)的单调增区间;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2020-07-05更新
|
435次组卷
|
5卷引用:重庆市凤鸣山中学2021届高三上学期半期数学试题