引用第11樓sheepsheephin於2007-11-24 18:33發表的“”:
demand curve 打直即係無論price 係咩佢都會consume 一個fixed o既quantity
其實點解我會揀A....
因為我係捻番買煙食呢個case.....
買煙係因為有一個 price inelastic既demand....even price升幾多,都唔會reduce好多QD....
因為煙係一樣addicted既野....
咁捻番呢個case.....佢gamble到spend all income on consumption落gamble度...即係totally addicted...所以我先會捻係Ed=0
如果個答案係D....我捻到既解釋就係因為gambling係唔involve price呢樣野....咁所以就determine唔到條demand curve?