已知曲线
与x轴交于
,
两点,点
的坐标为
.圆
过
三点,当实数
变化时,存在一条定直线
被圆
截得的弦长为定值,则此直线方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee7af19bc3cf8457d7095152ed8e373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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19-20高二上·江苏淮安·阶段练习 查看更多[2]
江苏省淮安市淮阴中学2019-2020学年高二上学期10月月考数学试题(已下线)专题24 《圆与方程》中的定值问题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
更新时间:2019-10-20 21:53:37
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【推荐1】长方体
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,
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的中心为
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上从
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上的射影
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【推荐2】已知圆C过点
,
,
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单选题
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适中
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名校
解题方法
【推荐1】过三点
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【推荐2】圆
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所得的最短弦长为( )
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