How can I write division on A matrix (ga)

Hello I m using ga for integer linear problem. And I want to use division when I created A matrix.

General constrain structure is A*x ≤ b. However I want to use x1/X2<=b constraint.

For general structure , we write A on A matrix and b on b matrix for X variables

My question is how can I write X1/x2 on A matrix (x1 and x2 are variable)

Answer 1

[Walter Roberson]

That would be an A matrix row with 1 at x1 position and -b in x2 position, with a corresponding 0 in the b matrix

[halime çelik]

Thanks for your answer. However,I had asked question Wrongly.

X1/X2<=X3

How is it written in A matrix and b matrix?

[Walter Roberson]

If X1, X2, and X3 are all entries in the x vector, then that would be a non-linear constraint.

ga() with integer constraints does not permit nonlinear equality constraints, but it does permit nonlinear inequality constraints, so it is permitted to use that kind of formula. You could code it in the nonlinear constraints as

x(1) - x(2)*x(3)