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1 . 设
,
是两个不共线的向量,
,
,
.
(1)若平面内不共线的四点O,A,B,C满足
,求实数k的值;
(2)若A,C,D三点共线,求实数k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f02bdbb1d101da9412e0b248e6989097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04ac4f51b38ae6757af9f8d3c0a87a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb78c7cd736ff2ef0fba8380127980af.png)
(1)若平面内不共线的四点O,A,B,C满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c6ae0c7a1429d4dacf069042a63fcd.png)
(2)若A,C,D三点共线,求实数k的值.
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2020-02-26更新
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497次组卷
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3卷引用:内蒙古赤峰市2019-2020学年高一上学期期末联考数学试题