Question 3.4.1: if A = [3 4 5 6], B = [3 4 5 7], and C = [3 4 7 5 6 8],
if
\textbf{A} = \begin{bmatrix} 3 & 4 \\ 5 & 6 \end{bmatrix} , \text{B} = \begin{bmatrix} 3 & 4 \\ 5 & 7 \end{bmatrix} , and \textbf{C} =\left [ \begin{matrix} 3 & 4 & 7 \\ 5 & 6 & 8 \end{matrix} \right ] ,
then A ≠ B because a_{22} = 6, whereas b_{22} = 7, and A ≠ C because the matrices A and C are not of the same size.
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