Marginal utility
Benefit derived from consuming a product / From Wikipedia, the free encyclopedia
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In economics, marginal utility describes the change in utility (pleasure or satisfaction resulting from the consumption) of one unit of a good or service.[1] Marginal utility can be positive, negative, or zero. Negative marginal utility implies that every additional unit consumed of a commodity causes more harm than good, leading to a decrease in overall utility. In contrast, positive marginal utility indicates that every additional unit consumed increases overall utility.[2]
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In the context of cardinal utility, economists postulate a law of diminishing marginal utility. This law states that the first units of consumption of a good or service yields more satisfaction or utility than the subsequent units, and there is a continuing reduction in satisfaction or utility for greater amounts. As consumption increases, the additional satisfaction or utility gained from each additional unit consumed falls, a concept known as diminishing marginal utility. This idea is used by economics to determine the optimal quantity of a good or service that a consumer is willing to purchase.[3]