The cubic fuzzy graph structure is a tool for modeling problems, in which there are two fuzzy values for each variable and the relationships between them that cannot be expressed as a single fuzzy ...

To model the operating cost of thermal generating units, it is common to use polynomial relations between their power output and fuel input. These mathematical relations are known as fuel-cost ...

more about quadratic functions and their graphs, be able to recognise two further types of functions and graphs – cubic functions and reciprocal functions.