如图所示,已知在四面体
中,点
、
分别是棱
、
的中点,若
,其中
、
、
为实数,则
的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1644ac792952a23a571c90ee526ba2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/8c8802d1-9d06-4cd3-9540-2154261c08a3.jpg?resizew=164)
更新时间:2021-01-24 13:18:53
|
【知识点】 用空间基底表示向量
相似题推荐
填空题-单空题
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(0.85)
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【推荐1】已知四面体
是棱
的中点,设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9d86315677a86bb4dc09d06310f3f1.png)
________ (用向量
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1317c716f05a6b59afdbd0de7ba8987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc5343d0ed7b449971c7ba787a621fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9d86315677a86bb4dc09d06310f3f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
您最近一年使用:0次
填空题-单空题
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较易
(0.85)
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【推荐2】在平行六面体
中,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9508ce83038e0d333f0bdfa4a305f22b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987d07ea502ea5f785dc8e5453974c5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9508ce83038e0d333f0bdfa4a305f22b.png)
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