NO.PZ2016010802000027
问题如下:
If the cross-price elasticity between two goods is negative, the two goods are classified as:
选项:
A.
normal.
B.
substitutes.
C.
complements.
解释:
C is correct.
With complements, consumption goes up or down together. With a negative cross-price elasticity, as the price of one good goes up, the demand for both falls.
考点:互补品。
解析:当两类商品的交叉价格弹性为负的时候,即一种商品的价格上升会导致两种商品的需求量同时下降,那么这两种商品就是互补品。
老师,我想问一下,为什么cross price elast,是会和两个产品的Q有关,不应该是,一个产品的P变动,另一个产品的Q变动吗?为什么是两个产品的Q都会变动呢,谢谢