I am trying to solve a set of simultaneous equations, 11 equations and 11 variables to solve for. However in practice one variable i am trying to solve for (OFL) cannot be negative. When i solve the system using FindRoot, the variable OFL is negative- this is a problem. Is there a way in Mathematica (version 4.1) to impose a condition that a variable has to be >=0? I have attached the problem.
Can anybody assist me?
Attachment: mathematica problem.nb, URL: ,