Given $A=\begin{pmatrix}2&5\8&3\end{pmatrix}$ and $B=\begin{pmatrix}3&8\5&2\end{pmatrix}$, eva

Question

Given $A=\begin{pmatrix}2&5\8&3\end{pmatrix}$ and $B=\begin{pmatrix}3&8\5&2\end{pmatrix}$, evaluate $A+B$, $2A-B$.

Accepted Answer

(a) $\begin{pmatrix}5&13\13&5\end{pmatrix}$; (b) $\begin{pmatrix}1&2\11&4\end{pmatrix}$.

Sec 3/4 E Math T15-Q11 - Addition, subtraction and scalar multiplication of matrices