Despite the fact that inclinations are the traditional groundwork of microeconomics, it is regularly helpful to address inclinations with a utility capacity and investigate human way of behaving in a roundabout way with utility capacities. Allow X to be the utilization set, the arrangement of all totally unrelated crates the purchaser might possibly consume. The customer's utility capacity {\displaystyle u\colon X\to\mathbb {R} } u\colon X\to\R positions each bundle in the utilization set. In the event that the purchaser stringently favors x to y or is unconcerned between them, then {\displaystyle u(x)\geq u(y)}u(x)\geq u(y).