\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Write the identity matrix of order 2, denoted \(\mathbf{I}_2\).
\(\mathbf{I}_2 = \begin{pmatrix}\input{14127}{}{3em}{2em}{}{} & \input{24127}{}{3em}{2em}{}{}\\\input{34127}{}{3em}{2em}{}{} & \input{44127}{}{3em}{2em}{}{}\\ \end{pmatrix} \)