1 . 如图,在平面直角坐标系
中,已知点
,点
,
、
分别为线段
、
上的动点,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/11cebcd9-221c-42d0-b80b-cb9ab3c097a9.png?resizew=259)
(1)若
,求点
的坐标;
(2)设点
的坐标为
,求
的外接圆的一般方程,并求
的外接圆所过定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3936cad21d35552695c225035f7e501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b59a9ab662afa0e7cd508df209b1c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/11cebcd9-221c-42d0-b80b-cb9ab3c097a9.png?resizew=259)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d18e6108a65f6aa37e651095fa5f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22be9bbdd9e6212e685f1f29f3635c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
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解题方法
2 . 若函数
(
且
)有两个零点,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5112d3720f0c184c6fb1555d5465df71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-03更新
|
783次组卷
|
3卷引用:广西崇左市2019-2020学年高一上学期期末数学试题