已知实数
,
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c097c7f5695e31804dfc894db9ec521c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebc856291255f2d4a6c20b982a2442.png)
A.1 | B.2 | C.4 | D.6 |
更新时间:2022-12-28 21:27:43
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单选题
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【推荐1】设实数x,y满足约束条件
,则目标函数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8edd68ab5d93d1d3da3f0fbe43a0a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842cae3dde248bc1ab97a3bf8bb16e10.png)
A.40 | B.2 | C.4 | D.6 |
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【推荐1】已知
是抛物线
的焦点,
,
是该抛物线上两点,
,则
的中点到准线的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d5933afcb3d4026623b5611891125b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
A.![]() | B.2 | C.3 | D.4 |
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【推荐2】圆
与直线
的位置关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad893a2b7da84a06fc43f748071440e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e33fd142fee0c7ed8b6dddae0cb5c8.png)
A.相交 | B.相切 | C.相离 | D.不能确定 |
您最近一年使用:0次