Question

Trong mặt phẳng Oxy cho A(2,3),B(4,-1). Tọa độ của vecto OA - vecto OB là

Answer 1

\(\overrightarrow{OA}-\overrightarrow{OB}\)

\(\overrightarrow{OA}\left(x_A-x_O;y_A-y_O\right)=\left(2;3\right)\)

\(\overrightarrow{OB}=\left(x_B-x_O;y_B-y_O\right)=\left(4;-1\right)\)

\(\Rightarrow\overrightarrow{OA}-\overrightarrow{OB}=\left(2-4;3+1\right)=\left(-2;4\right)\)

Answer 2

\(\overrightarrow{OA}=\left(2;3\right)\) ; \(\overrightarrow{OB}=\left(4;-1\right)\)

\(\Rightarrow\overrightarrow{OA}-\overrightarrow{OB}=\left(2-4;3+1\right)=\left(-2;4\right)\)