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解题方法
1 . 已知圆C与圆M:
相外切,且圆心C与点
关于直线l:
对称.
(1)求圆C的标准方程;
(2)求经过点
圆C的切线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4561bfcd66d795bb656b2c190e44217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a42451bdbef6c82dbaf8e06f0614794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fd0ef39b1061d76e79eaf71a5cf03f.png)
(1)求圆C的标准方程;
(2)求经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b070f1f0e45a972c1c6c8d509b39d03.png)
您最近一年使用:0次
2023-02-10更新
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3卷引用:山东省东营市2022-2023学年高二上学期期末考试数学试题
山东省东营市2022-2023学年高二上学期期末考试数学试题江西省大余中学2022-2023学年高二下学期期末学情调研数学试题(已下线)艺体生一轮复习 第八章 解析几何 第38讲 圆的方程及其计算【练】
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2 . 如图,在平面直角坐标系中,已知矩形
的长为2,宽为1,
,
边分别在
轴、
轴的正半轴上,
点与坐标原点重合,将矩形折叠,使
点落在线段
上,设此点为
.
(1)若折痕的斜率为-1,求折痕所在的直线的方程;
(2)若折痕所在直线的斜率为
,(
为常数),试用
表示点
的坐标,并求折痕所在的直线的方程;
(3)当
时,求折痕长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8396a7120abeaae6236a9292e5b9f8.png)
(1)若折痕的斜率为-1,求折痕所在的直线的方程;
(2)若折痕所在直线的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8396a7120abeaae6236a9292e5b9f8.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efefa30048153b433c5ee332d24ba89a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/6be1dd4b-72e7-4de4-a464-ed1f4748dcf9.png?resizew=191)
您最近一年使用:0次
2018-01-12更新
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779次组卷
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8卷引用:山东省东营市第一中学2022-2023学年高二下学期开学摸底检测数学试题