Question

Se consideră matricele $A=\left([tex]\begin{array}{rr}-1 & 3 \\ 2 & -4\end{array}\right), B=\left(\begin{array}{rr}0 & -2 \\ 1 & 3\end{array}\right), C=\left(\begin{array}{rr}1 & -1 \\ 0 & 2\end{array}\right)$.[/tex]

Verificați prin calcul egalitățile: $A(B+C)=A B+A C,(A B) C=A(B C)$.

Answer 1

Răspuns:3x3(23-2)=69