1 . 已知平行四边形
中,若
是该平面上任意一点,则满足
(
).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/e37bff09-0338-46ea-9759-17c509c118ee.png?resizew=194)
(1)若
是
的中点,求
的值;
(2)若
、
、
三点共线,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8f76a25cff46e6dce21b266a3363b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa72c594ebe33496fa7b9edf1db5c7e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/e37bff09-0338-46ea-9759-17c509c118ee.png?resizew=194)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
(2)若
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6096acdd2d0ce16e1e45397ec5e365d4.png)
您最近一年使用:0次
2 . 设不共线的两个向量
,
,若
,
,
.求证:
、
、
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8315ec34019d719771152be2252106e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf39ca3294f5520518dd4f1c0609876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fc4ac16a4fd56a609a93cf3e3914ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93bd143522ba26604b45345b6b8c9e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061ab59acb9b114ddd8bdaf13bff7cb6.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/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
2019-11-10更新
|
245次组卷
|
4卷引用:沪教版 高二年级第一学期 领航者 第八章 附录3 实数与向量的乘积