Mathematics for IGCSE & O level - Vectors (Section 1 - No. 37)
If \( ec{OA} = egin{pmatrix} 3 \\ 1 \end{pmatrix}\) and M is the midpoint of OA, then what is \(\vec{OM}\)?
\(\begin{pmatrix} 1.5 \\ 0.5 \end{pmatrix}\)
\(\begin{pmatrix} 6 \\ 2 \end{pmatrix}\)
\(\begin{pmatrix} 0.5 \\ 1.5 \end{pmatrix}\)
\(\begin{pmatrix} 1 \\ 3 \end{pmatrix}\)
解释
M is the midpoint, thus OM = OA/2 = 1/2 * (3,1) = (1.5, 0.5)