\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Calculate the negative of the vector \(\vec{a} = \begin{pmatrix} 4 \\ -7 \end{pmatrix}\).
\(-\vec{a} = \begin{pmatrix} \input{124554}{}{3em}{2em}{}{} \\ \input{224554}{}{3em}{2em}{}{} \end{pmatrix}\)