Additional Mathematics – Vectors in two dimensions | e-Consult
Vectors in two dimensions (1 questions)
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Answer 2
- \(\mathbf{u}+\mathbf{v}=\begin{pmatrix}2+(-1)\\-3+4\end{pmatrix}=\begin{pmatrix}1\\1\end{pmatrix}\).
- \(3\mathbf{u}-2\mathbf{v}=3\begin{pmatrix}2\\-3\end{pmatrix}-2\begin{pmatrix}-1\\4\end{pmatrix}
=\begin{pmatrix}6\\-9\end{pmatrix}-\begin{pmatrix}-2\\8\end{pmatrix}
=\begin{pmatrix}8\\-17\end{pmatrix}\).