解题方法
1 . 判断下列各组三点是否共线:
(1)
,
,
;
(2)
,
,
;
(3)
,
,
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3326927e4b01e981a19109633141e06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e61dd6cbb403ec51f5af91bd0e351b6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5a49b8191e84cc70e5eb8c7dd626b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddcd4d7078d5a9b2f8acf6347ba7f775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9053d5737eece07976764d700c1854.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb6dcb76bfc69197676601d758ac341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bd4aede5e2f00fc4aefd0f169e9fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5da25e349a06750be2866ccf741b55.png)
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2023-10-09更新
|
236次组卷
|
7卷引用:习题 2-4
(已下线)习题 2-4北师大版(2019)必修第二册课本习题 习题2-4(已下线)6.3.4 平面向量的数乘运算的坐标表示-高一数学同步精品课堂(人教A版2019必修第二册)(已下线)6.3.4 平面向量数乘运算的坐标表示10种常考题型归类(2)-高频考点通关与解题策略(人教A版2019必修第二册)(已下线)2.4 平面向量基本定理及坐标表示-同步精品课堂(北师大版2019必修第二册)(已下线)6.3.4 平面向量数乘运算的坐标表示——课堂例题(已下线)2.4 平面向量基本定理及坐标表示6种常见考法归类(2)-【帮课堂】(北师大版2019必修第二册)
解题方法
2 . 已知抛物线
和
的焦点分别为
和
,且
.
(1)求
的值;
(2)若点
和
是直线
分别与抛物线
和
的交点(异于原点),连接
并延长交抛物线
于
,连接
并延长交抛物线
于
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700ad7aed07a63e122201c04aee41aca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e024c990f50078447b1c2f5642844a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d6c11ba57b8300a54187717c15c9c1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若点
![](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/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb46dfe874c81668dff7678aa04c5e7.png)
您最近一年使用:0次
2021-12-03更新
|
311次组卷
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3卷引用:湘教版(2019) 选修第一册 突围者 第3章 第三节 课时2 抛物线的简单几何性质
20-21高一·全国·课后作业
解题方法
3 . 已知点A(x,0),B(2x,1),C(2,x),D(6,2x).
(1)求实数x的值,使向量
共线;
(2)当向量
共线时,点A,B,C,D是否在一条直线上?
(1)求实数x的值,使向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39df67384d5bc03635e97e88eb61d0c3.png)
(2)当向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39df67384d5bc03635e97e88eb61d0c3.png)
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