Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

In economics, the utility function measures the welfare or satisfaction of a consumer as a function of the consumption of real goods, such as food or clothing. Utility function is widely used in ...

In the 19th century, when European thinkers began developing the economic principle of diminishing marginal utility, they probably weren’t dwelling on its implications for the best strategy for ...