1 . 已知
,
,则
的取值可以是__________ .(写出一个即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcb99284fd1fdf946f7fd97886d080f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8599459245d6c4756c18598fc3d75e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2023-07-05更新
|
149次组卷
|
5卷引用:甘肃省白银市靖远县第二中学2022-2023学年高二下学期期末数学试题
甘肃省白银市靖远县第二中学2022-2023学年高二下学期期末数学试题河北省邯郸市2022-2023学年高二下学期期末考试数学试题(已下线)模块二 专题5《三角恒等变换》单元检测篇 A基础卷 (人教A)期末终极研习室(已下线)模块一 专题4《 三角恒等变换》单元检测篇A基础卷(已下线)模块一专题5《三角恒等变换》单元检测篇A基础卷(人教B)
2 . 给出下列四个结论:
①对概率不为零的事件
,
,若
,
相互独立,则
,
一定不互斥;
②若
是从区间
中任取的一个整数,则使
的概率为
;
③
,使得
;
④对抛物线
,则长为10的动弦的中点到
轴的距离最小为3.
其中正确结论的个数为( )
①对概率不为零的事件
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4695c34aafd1c1ae276f9eddc53a397d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76f26c11d8b8b0ee366bfed0b1bee26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d74ef32584586ec4857acd0a3f4fe9.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c713cd4339bf3eaf2e1ccec54cda47b.png)
④对抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
其中正确结论的个数为( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次