Cross elasticity of demand measures the responsiveness of changes in the quantity demanded of one good to changes in the price of other goods.
交叉弹性需求的措施需求的一个好其他商品的价格变化的数量变化的响应的能力。
The only price which doesn’t lead to price changes is p*, the equilibrium price in which the quantity supplied equalsthe quantity demanded.
唯一不带来变动的价格就是p*，即能够使需求数量等于供给数量的均衡价格。
Income elasticity measures the responsiveness of changes in quantity demanded to changes in income.
收进弹性办法在收进的改变需求数目改变的响应能力。
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