Question

Compute the following sum:
$A=\left[\begin{array}{cc}3& -2\\ 1& 4\end{array}\right]$and $B=\left[\begin{array}{cc}-2& 4\\ 1& 3\end{array}\right]$

Answer 1

$A=\left[\begin{array}{cc}3& -2\\ 1& 4\end{array}\right]$ and $B=\left[\begin{array}{cc}-2& 4\\ 1& 3\end{array}\right]$

$\Rightarrow$ $A+B=\left[\begin{array}{cc}3& -2\\ 1& 4\end{array}\right]+\left[\begin{array}{cc}-2& 4\\ 1& 3\end{array}\right]$

$\Rightarrow$ $A+B=\left[\begin{array}{cc}3+(-2)& -2+4\\ 1+1& 4+3\end{array}\right]$

$\Rightarrow$ $A+B=\left[\begin{array}{cc}1& 2\\ 2& 7\end{array}\right]$