How to add a value to a already existing matrix?

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Rachuan
Rachuan 2014-9-7
评论： Mahesh 2014-9-7
KB=[1 3;4 5] for i:Nbarras Mgl(i,1)= Mgl(i,1) + KB(i,1)
which method is correct? for i:Nbarras Mgl(i,1)= Mgl(i,1) + KB(i,1)
or for i:Nbarras Mgl(i,1)=+KB(i,1)
or somehow else?

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Mahesh
Mahesh 2014-9-7
I hope the correct one, if you have already defined Mgl, is
Mgl(1,1)= Mgl(1,1) + KB(1,1)
Good luck
  2 个评论
Rachuan
Rachuan 2014-9-7
When i do it like that it shows
"Undefined function 'Mgl' for input arguments of type 'double'."
Mahesh
Mahesh 2014-9-7
you need to define Mgl matrix if you do not have like
Mgl = zeros(2,2)

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