Question-96616

Question Number 96616 by mathocean1 last updated on 03/Jun/20

Answered by Rio Michael last updated on 03/Jun/20

A = (\begin{matrix} a & b \\ b & c \end{matrix}) and B = (\begin{matrix} x \\ y \end{matrix})

A B = (\begin{matrix} a & b \\ b & c \end{matrix}) (\begin{matrix} x \\ y \end{matrix}) = (\begin{matrix} a x + b y \\ b x + c y \end{matrix})

B A = (\begin{matrix} x \\ y \end{matrix}) (\begin{matrix} a & b \\ b & c \end{matrix}) impossible since

order (A) = 2 \times 2 and order (B) = 2 \times 1