二、需求交叉弹性 (Cross elasticity of demand) a Cross-price elasticity of demand The responsiveness of demand for one good to a change in the price of another(either a substitute or a complementary) aIt enables us to predict how much the demand curve for the first product will shift when the price of the second product changes The major determinant of cross elasticity of demand is the closeness of the substitute or complement. The closer it is, the bigger will be the effect on the first good of a change in the price of the substitute or complement, and hence the greater the cross elasticity either positive or negative三、单个需求与市场需求 二、需求交叉弹性 (Cross elasticity of demand) ▪Cross-price elasticity of demand The responsiveness of demand for one good to a change in the price of another (either a substitute or a complementary). ▪It enables us to predict how much the demand curve for the first product will shift when the price of the second product changes. ▪The major determinant of cross elasticity of demand is the closeness of the substitute or complement. The closer it is, the bigger will be the effect on the first good of a change in the price of the substitute or complement, and hence the greater the cross elasticity – either positive or negative