///
Dadas as matrizes A = \[\begin{bmatrix} -3 & 0 \\ 6 & 1 \end{bmatrix}\] e B = \[\begin{bmatrix} 1 & 2 \\ 2 & 5 \end{bmatrix}\] , analisar os itens abaixo: I) A x B = \[\begin{bmatrix} -3 & -6 \\ 8 & 16 \end{bmatrix}\] .
II) At = \[\begin{bmatrix} -3 & 6 \\ 0 & 1 \end{bmatrix}\] .