How to add a value to a already existing matrix?

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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?

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

Rachuan 2014-9-7

When i do it like that it shows

"Undefined function 'Mgl' for input arguments of type 'double'."

Mahesh 2014-9-7

you need to define Mgl matrix if you do not have like

Mgl = zeros(2,2)

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