How to run fmincon using following function?

Hi,

I am trying to minimise the following function to get as close to 0 as possible (i.e. x*B = c);

min(x) = x*B + c;

where x is a 200 x 1 column vector, B is a 1 x 200 row vector and c is a scalar constant. Is it possible to do this in matlab with fmincon or is another method better suited to the task?

[Matt J]

x is a 200 x 1 column vector, B is a 1 x 200 row vector and c is a scalar constant

Are you sure you don't mean that x is 1 x 200 and B is 200x1 ? Otherwise, you have a system of 200 identical equations.

Answer 1

[Matt J]

With no constraints, it would simply be,

x=ones(200)/(-c*B);