Questão 2063018

\(\begin{bmatrix} 1 & -\frac{1}{2} \\ -\frac{1}{2} & 1 \\ \end{bmatrix}\)

\(\begin{bmatrix} 1 & \frac{1}{2} \\ \frac{1}{2} & 1 \\ \end{bmatrix}\)

\(\begin{bmatrix} -1 & -\frac{1}{2} \\ -\frac{1}{2} & -1 \\ \end{bmatrix}\)

\(\begin{bmatrix} -1 & \frac{1}{2} \\ \frac{1}{2} & -1 \\ \end{bmatrix}\)

\(\begin{bmatrix} 2 & -1 \\ -1 & 2 \\ \end{bmatrix}\)