Dear GAMS-users,

I’m trying to formulate a linear problem with three decision variables, however somehow I am not getting it to work properly.

For example we have a production problem with three decision variables:

- Quality of production inputs (Quality 1,2,3, etc.) - binary variable
- Production technology (Technology 1,2,3, etc. producing product 1,2,3, etc.) - continuous variable
- Transportation area (Area 1,2,3… etc.) - binary variable(?)

I have worked with models with two decision variables and linearized them with help from this site: https://www.leandro-coelho.com/linearization-product-variables/ but somehow I cannot seem to get this to work with three variables.

Does anyone have a clue how to solve these kind of problems while keeping them linear?

Kind regards,

GFA