Cho hai điểm
và
. Tọa độ của vectơ
là
A.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20185321604811319480/obj20185321604811319480876850_images/obj20185321604811319480876850_img1.png)
B.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20185321604811319480/obj20185321604811319480542382_images/obj20185321604811319480542382_img1.png)
C.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20185321604811319480/obj20185321604811319480545317_images/obj20185321604811319480545317_img1.png)
D.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20185321604811319480/obj20185321604811319480402812_images/obj20185321604811319480402812_img1.png)
Đáp án và lời giải
Đáp án:C
Lời giải:
Phân tích:
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20185321604811319480/obj20185321604811319480783734_images/obj20185321604811319480783734_img1.png)