How to slove AX=B, an over determined system represented by matrices. A is 500 x 3 matrix and B is 500 x 1 matrix and need to find 'X' a 3x1 matrix.

I dont have optimization toolbox

Answer 1

[Birdman]

By directly using linsolve.

https://www.mathworks.com/help/matlab/ref/linsolve.html

A numeric example:

%random datas
A=randi([1 3],500,3);
B=randi([1 3],500,1);
%solution
X=linsolve(A,B)

[Lakshmi Chodavarapu]

Thanks and tried this already. Is linsove() an alternative for lsqlin() when there are no constraints..?

[Birdman]

Yes.

[Lakshmi Chodavarapu]

Thank you for clearing the doubt.