21-22高二·湖南·课后作业
1 . 已知平行六面体
,化简下列各式:
(1)
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca379d60c10cbcadedf9ee8bfe38d702.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc80822a0d97609eeb1aded41b623ba0.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17808aa4b482099cfa1bfcfb3ed0039.png)
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21-22高二·湖南·课后作业
2 . 在正方体
中,化简下列各式:
(1)
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212fd2469cddc01a595732da549f81d6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f5ee14fb0d79db64a846b10ccaf4b3.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef3cdf5b8bb4462e1445e79b25ccc67.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947f0f29c99069a498f855b0f886262.png)
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21-22高二上·全国·课后作业
3 . 如图
垂直于正方形
所在的平面,
分别是
的中点,并且
.试建立适当的空间直角坐标系,求向量
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbb19cb4eb2d7f3207559eb07355ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7b6d04f024ca05cdfacc8ce9137c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb93bee3008094ff1faf0dc99eba9318.png)
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