1 . 已知圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920bd07e70b67be4b02dc676e44cb29f.png)
(1)求圆
关于直线
对称的圆
的标准方程;
(2)过点
的直线
被圆
截得的弦长为8,求直线
的方程;
(3)当
取何值时,直线
与圆
相交的弦长最短,并求出最短弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920bd07e70b67be4b02dc676e44cb29f.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403cb45dea2e88997e02281a68523092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90ed450698dbe77eea4a861d905bd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2d187075acae7a8fbd3ac0b588777c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2019-09-11更新
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2699次组卷
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6卷引用:天津市六校2018-2019高一下学期期末联考数学试题