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how can i add 2 row

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Light
Light 2013-6-6
A=[-1,-1,0,0,0;0,0,0,-1,0;0,1,-1,0,-1;0,0,1,0,0;1,0,0,1,1]
With that matrix how can i add row to row command (code)
And in any kind of matrix?

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Walter Roberson
Walter Roberson 2013-6-6
A(FirstRow,:) + A(SecondRow,:)
Or if you want to get fancier,
sum(A([FirstRow, SecondRow],:))

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