Learn how marginalism explains consumer decision-making, marginal utility, and cost in microeconomics, along with how it ...

You don't need to have studied economics to be familiar with the law of diminishing marginal utility and the idea of consumer surplus. The first has to do with the benefit consumers get from their ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Robert Kelly is managing director of XTS Energy LLC, and has more than three ...

Fact checked by Ariel Courage Reviewed by Erika Rasure Key Takeaways Utility functions measure consumer preferences and satisfaction with goods or services.They help analyze consumer decisions to ...