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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20-21高二·江苏·课后作业
2 . 判断下列命题的真假:
(1)若向量
、
共线,则向量
、
所在的直线平行( )
(2)若向量
、
所在的直线是异面直线,则向量
、
一定不共线( )
(3)若三个向量
、
、
两两共面,则三个向量
、
、
一定共面( )
(4)若
、
、
是空间三个向量,则对空间任一向量
,总存在唯一的有序实数组
,使
.( )
(1)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
(3)若三个向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1bfbd2ef51eaeb6e686e27cc95638e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b525d8c768efd801ab58bc4c0da9221e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81b46a3ddb3f2b793df6294d710bab1.png)
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21-22高二·全国·课后作业
3 . 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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