1 . 思维辨析(对的写正确,错的写错误)
(1)在空间直角坐标系中,向量
的坐标与终点
的坐标相同.( )
(2)若
,
,则
是钝角
..( )
(3)若
,
,
.( )
(4)把向量
平移后其坐标不变.( )
(1)在空间直角坐标系中,向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e31a92e25afc9bd17d52cd24d66f647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d2516862a73940c324d1bfdc72377e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eaf5dcdb83f75f8b6d005f334276681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e2e6326ee43f689c8276db39c394fb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e31a92e25afc9bd17d52cd24d66f647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d2516862a73940c324d1bfdc72377e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dfd21ff3310118fd1998d8f2571ea0.png)
(4)把向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50f643a2ea8ac34b1f068b8b7d68774.png)
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21-22高二·全国·课后作业
2 . 若点A(-1,0,1),B(1,4,7)在直线l上,则直线l的向量参数方程可以为
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eac8bfbdcde7e401d1f18f9a476945e.png)
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