在
中,已知
,
为线段
的中点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7ef4a3da53511ce0ef1b55b28b990b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43efdcf995d5c26d1075de445a986e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19b36266f6a359810564b0a3d6613ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7ef4a3da53511ce0ef1b55b28b990b.png)
更新时间:2024-06-12 12:26:16
|
【知识点】 利用平面向量基本定理求参数
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【推荐1】在平行四边形OACB中,E是AC的中点,F是BC边上的点,且
,若
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的值为______ .
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【推荐2】已知向量
,
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f6be725bc2be28f5a3983e10bfeefc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0635dd7654629ef1dc976c116aa17dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04082154fe19c91078a95c1ee219ff93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c1bbdd632e3d014a4aeecd1c2061ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
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