Mathematics 0580 · IGCSE · Magnitude of a vector

Magnitude of a vector — practice question

$\vec{AB}=\begin{pmatrix}7\\-3\end{pmatrix}$
(a)[1]

Find the value of $3\vec{AB}$.

(b)[2]

Find the value of $|\vec{AB}|$.

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This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$\begin{pmatrix} 21 \\-9 \end{pmatrix}$” …

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