# How to run fmincon using following function?

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Maxwell Barton on 22 Jan 2020
Commented: Matt J on 22 Jan 2020
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 on 22 Jan 2020
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.

Matt J on 22 Jan 2020
Edited: Matt J on 22 Jan 2020
With no constraints, it would simply be,
x=ones(200)/(-c*B);

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