Mathematics for IGCSE & O level - Vectors (Section 2 - No. 11)
If \( \vec{a} = \begin{bmatrix} -1 \\ 2 \end{bmatrix} \) and \( \vec{b} = \begin{bmatrix} 3 \\ -4 \end{bmatrix} \), what is \( \vec{a} - \vec{b} \) equal to?
\(\begin{bmatrix} 4 \\ -6 \end{bmatrix}\)
\(\begin{bmatrix} -4 \\ 6 \end{bmatrix}\)
\(\begin{bmatrix} 2 \\ -2 \end{bmatrix}\)
\(\begin{bmatrix} -2 \\ 2 \end{bmatrix}\)
설명
Subtract respective components: -1-3 and 2-(-4)