11. Associative property

Verify the associative property \((A + B) + C = A + ( B + C)\) of the given matrices.

 

\(A = \begin{bmatrix}
9 & 6 & -3\\ 
5 & 4 & 12\\
5 & 1 & 8
\end{bmatrix}, B =\begin{bmatrix}
6 & 11 & 12\\
15 & 5 & 3\\
8 & 12 & 2
\end{bmatrix}, C =\begin{bmatrix}
9 & 4 & 6\\
7 & 5 & 3\\
6 & 1 & -11
\end{bmatrix}\)

 

 

The associative property of the matrix \((A + B) + C\) =≠ \(A + ( B + C)\)