设随机变量X,Y的方差存在且不等于0，若有，则X,Y不相关。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/1c7eba9af979438fae6e4f34405387f0.png
举一反三
- 设随机变量X,Y的方差存在且不等于0，若有，则X,Y不相关。https://im...ae6e4f34405387f0.png
- 若随机变量X,Y满足，则。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/a0b66ace257a4e1a93e06690c8f2047d.png
- 若随机变量X,Y独立，则。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/00c4d1e4a20d4a95bb7654c7eec93ac8.png
- 设函数，则x=0是的（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/ad3e899cd2ee4898a97bfad0fc668313.png
- x=0是的（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/7bf81bd79b3b46eb957c2f17d30c395a.png