单词 | marginal revenue |
释义 | marginal revenue The increase in total revenue when the quantity sold increases by a small amount, measured per unit of the increase in sales. If the seller is a price-taker, marginal revenue is equal to price. Where the seller faces a downward-sloping demand curve, where p is price and q is quantity sold, and the elasticity of demand is defined as εd = -(p/q)(dq/dp), marginal revenue is m = d(pq)/dq = p + q(dp/dq) = p[1 - (1/εd)]. Positive marginal revenue thus requires that εd > 1. |
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