1 . 在平面直角坐标系
中, 设点
, 点
与
两点的距离之和为
为一动点, 点
满足向量关系式:
.
(1)求点
的轨迹方程
;
(2)设
与
轴交于点
(
在
的左侧), 点
为
上一动点 (且不与
重合). 设直线
轴与直线
分别交于点
,取
,连接
,证明:
为
的角平分线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3933c6a5b045c5e8f0a33ad569b76c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9159195d6006db96d78578b7f1cfc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440981bbf50be4ff25fb266f8b968c80.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d687f47eed34e5a59e557f6aacf433d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbbc9c5353894f2c93c205c3ac04f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813597f052c8930e12f0a22aeaa3cce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf2130848c57fdbb994e41f107329b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf2130848c57fdbb994e41f107329b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529720d009eb609884234e36b7914251.png)
您最近一年使用:0次
2022-09-23更新
|
1050次组卷
|
2卷引用:福建师范大学附属中学2023届高三上学期数学月考试题(三)
2021高二·江苏·专题练习
名校
2 . 已知
的三个顶点分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/55caebd3-573b-44ed-ba5a-6424e07b7617.png?resizew=219)
(1)若过
的直线
将
分割为面积相等的两部分,求b的值;
(2)一束光线从
点出发射到BC上的D点,经BC反射后,再经AC反射到x轴上的F点,最后再经x轴反射,反射光线所在直线为l,证明直线l经过一定点,并求出此定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/444a4b2494e57a3544fd4ecaa105085d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346c0ff07b0cc9fac50c93ccc9bea549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47a2c1a3a93032fd7673f6ea63b876f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/55caebd3-573b-44ed-ba5a-6424e07b7617.png?resizew=219)
(1)若过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bcca984112ce384ecd262f0cb3cd9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ece77247e51cbe634a38d4fa34bc1f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
(2)一束光线从
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722e3eaee365c01a0e9e84fc88adfcd0.png)
您最近一年使用:0次
2021-09-03更新
|
2437次组卷
|
8卷引用:福建省厦门外国语学校2023-2024学年高二上学期10月阶段性检测数学试题
福建省厦门外国语学校2023-2024学年高二上学期10月阶段性检测数学试题(已下线)专题08 《直线与方程》中的解答题压轴题(2)-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)黑龙江省哈尔滨市第三中学2021-2022学年高二上学期10月月考数学试题(已下线)第二章 直线和圆的方程单元检测卷(能力挑战卷)-【一堂好课】2021-2022学年高二数学上学期同步精品课堂(人教A版2019选择性必修第一册)(已下线)2.3 直线的交点坐标与距离公式(同步练习)-【一堂好课】2021-2022学年高二数学上学期同步精品课堂(人教A版2019选择性必修第一册)(已下线)2.3直线的交点坐标与距离公式C卷(已下线)第27节 直线的方程与两直线的位置关系-备战2023年高考数学一轮复习考点帮(全国通用)第1章 直线与方程 单元综合测试卷