# adding a matrix

• July 19th 2006, 08:18 PM
kwtolley
3 2 1 2 -3 5
4 0 1 + 1 7 6 = My answer is 5 -1 6
5 7 7 after using excel, is this right. thanks again for checking.
• July 19th 2006, 08:41 PM
CaptainBlack
Quote:

Originally Posted by kwtolley
3 2 1 2 -3 5
4 0 1 + 1 7 6 = My answer is 5 -1 6
5 7 7 after using excel, is this right. thanks again for checking.

To add the matrices add corresponding elements so:

$
\left[ \begin{array}{ccc}
{3}& {2}&{1}\\
{4}& {0}&{1}
\end{array} \right]+
\left[ \begin{array}{ccc}
{2}& {-3}&{5}\\
{1}& {7}&{6}
\end{array} \right]=
\left[ \begin{array}{ccc}
{5}& {-1}&{6}\\
{5}& {7}&{7}
\end{array} \right]
$
,