1 . 向量
,设函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/c20f1ec4-e117-4a08-89a6-6cbc154031cf.png?resizew=307)
(Ⅰ)求
的表达式并化简;
(Ⅱ)写出
的最小正周期并在右边直角坐标中画出函数
在区间
内的草图;
(Ⅲ)若方程
在
上有两个根
,求m的取值范围及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a95c38619871c5f33c33298773026f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc1525aee9019a25cf71dc6054ec1ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/c20f1ec4-e117-4a08-89a6-6cbc154031cf.png?resizew=307)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260bb3786192dfcca715e41a3e0b6f44.png)
(Ⅲ)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31bc0c34811edba74dae3fcaed8f577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260bb3786192dfcca715e41a3e0b6f44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc14778010a33f90902ff17b1ec0ac73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
您最近一年使用:0次
2019-07-04更新
|
943次组卷
|
2卷引用:江西省七校(新余一中、丰城九中等)2020-2021学年高二(常规班)上学期第三次联考数学(理)试题