总结 总结 Summary Summa 价格弹性衡量了需求量对价格变化作出反应的 ◆供给价格弹性衡量了供给量对价格变化作出 quantity demanded responds to changes in the price. The price elasticity of supply measures how 如果需求曲线富于弹性,价格上升会导致总收益下 much the quantity supplied responds to changes in the price If a demand curve is elastic, total revenue falls when 在大多数市场上,供给在长期比在短期更富 ◆如果需求曲线峡乏弹性,价格上升会导致总收益上 于弹性 In most markets, supply is more elastic in the If it is inelastic, total revenue rises as the price rises. long run than in the short run10 总结 Summary ‹ 需求价格弹性衡量了需求量对价格变化作出反应的 程度。 Price elasticity of demand measures how much the quantity demanded responds to changes in the price. ‹ 如果需求曲线富于弹性，价格上升会导致总收益下 降。 If a demand curve is elastic, total revenue falls when the price rises. ‹ 如果需求曲线缺乏弹性，价格上升会导致总收益上 升。 If it is inelastic, total revenue rises as the price rises. 总结 Summary ‹供给价格弹性衡量了供给量对价格变化作出 反应的程度。 The price elasticity of supply measures how much the quantity supplied responds to changes in the price. ‹在大多数市场上，供给在长期比在短期更富 于弹性 。 In most markets, supply is more elastic in the long run than in the short run