若
,则
的取值范围为________ ,当
取得最大值时,向量
的方向________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3760461fe6b7555eeffb8444e543532d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f11ac1bd265894c8057f665c203051e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f11ac1bd265894c8057f665c203051e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
21-22高一·江苏·课后作业 查看更多[5]
更新时间:2022-04-10 15:00:18
|