“cross-price elasticity of demand”的概念、定义、翻译、参考文献-科学参考

cross-price elasticity of demand

Economics

The ratio between the proportional change in demand for a good and the proportional change in the price of a different good. This is calculated assuming that the price of the good itself is constant. Thus if q_x is the quantity of good x, and p_y is the price of good y, the cross-price elasticity of demand is given by

$ε_{x y} = \frac{\partial q_{x}}{q_{x}} / \frac{\partial p_{y}}{p_{y}} = \frac{p_{y}}{q_{x}} \frac{\partial q_{x}}{\partial p_{y}} .$

If ε‎_xy > 0, x and y are substitutes; if ε‎_xy < 0, x and y are complements.

单词	cross-price elasticity of demand
释义	cross-price elasticity of demand Economics The ratio between the proportional change in demand for a good and the proportional change in the price of a different good. This is calculated assuming that the price of the good itself is constant. Thus if q_x is the quantity of good x, and p_y is the price of good y, the cross-price elasticity of demand is given by $ε_{x y} = \frac{\partial q_{x}}{q_{x}} / \frac{\partial p_{y}}{p_{y}} = \frac{p_{y}}{q_{x}} \frac{\partial q_{x}}{\partial p_{y}} .$ If ε‎_xy > 0, x and y are substitutes; if ε‎_xy < 0, x and y are complements.
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