\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Find the opposite matrix of \(\mathbf{A} = \begin{pmatrix} -1 & 7 \\ 0 & -2 \\ \end{pmatrix}\).
\(-\mathbf{A} = \begin{pmatrix}\input{14129}{}{3em}{2em}{}{} & \input{24129}{}{3em}{2em}{}{}\\\input{34129}{}{3em}{2em}{}{} & \input{44129}{}{3em}{2em}{}{}\\ \end{pmatrix} \)