1 . 已知
、
、
是平面上不共线的三点,记
,
,若平面上另一点
满足
,求证:
、
、
三点共线,且
恰为线段的中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/6942bd9fc5d090de0cfad7022aa32f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cc63e33fe47da2704cff57d148dde0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00c429fd610a9b56ef51f95eaee7eff.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2019-11-10更新
|
84次组卷
|
3卷引用:沪教版 高二年级第一学期 领航者 第八章 每周一练(1)
名校
2 . 在平面直角坐标系
中,
为坐标原点,
,
.若存在实数
使
,且
,则点
的轨迹方程为________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d411824b225a056aa362e714ad49cfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa93ce572e12fe773b2c63c660f12f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa404d3ff313b0a28a76a48d7d87234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e8cca8c31b6c3cf74dd622e54617e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086e5d5ff1e4fc30ff00c58ff86924cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
3 . 设点P(3,-6),Q(-5,2),R的纵坐标为 -9,且P、Q、R三点共线,则R点的横坐标为
A.-9 | B.-6 | C.9 | D.6 |
您最近一年使用:0次
2015-08-10更新
|
562次组卷
|
4卷引用:上海市洋泾中学2017-2018学年高二上学期期中数学试题
真题
解题方法
4 . 已知
,若平面内三点A(1,
),B(2,
),C(3,
)共线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975f579159d9e8ade04e84c4da7f6b8a.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5060ad37c403f248c937c1d59af5c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8cc0b4997cae4d8aec791a1d3923314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f4a9c0df58c74ed9dfda9a83aa5f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975f579159d9e8ade04e84c4da7f6b8a.png)
您最近一年使用:0次
2016-11-30更新
|
1872次组卷
|
4卷引用:上海市市北中学2023-2024学年高二下学期阶段测试(3月)数学试题