如图,在空间四边形
中,
,
,
分别是
,
,
的中点,化简下列各式:
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d76e25c4401ec86083a284a0704aa1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3854cbb7f175b28d8deefba89da167a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6c2bdc666e80b53226f2419b2f1003.png)
21-22高二·湖南·课后作业 查看更多[2]
更新时间:2022-03-05 20:05:37
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解答题-问答题
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(0.94)
名校
【推荐1】如图,在正方体
中,点E,F分别是上底面
和侧面
的中心,求下列各题中m,n的值:
;
(2)
.
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(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08f2c4e35a5e6f998692af388157748.png)
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【推荐2】如图,给定长方体
,点
在棱
的延长线上,且
.设
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、
的线性组合表示下列向量:
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/381985fdee6a1ac3ad4a73f5f653b84c.png)
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(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/335300e80d5b19069e4ebc55e2b2426d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccec46f7c4da972fef6e940158628242.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
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【推荐1】如图所示,已知在三棱锥
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【推荐2】如图,在正方体ABCD-A1B1C1D1中,M、N分别为AB、B1C的中点.如何用
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您最近一年使用:0次