I want to minimize x1 + x2) and list the constraints (e.g. 0 <= x1 <= 10 and 5 < x2 <= 100).<BR><BR>However, upon reading and re-reading this problem, the solution seems intuitive and flat out ...

Altmann and Wagner (1978) formulated this energy-maximization goal as a problem in linear optimization ("linear programming"). For every such problem there is another linear ... to each toxin or other ...