AL Econ 問題第二波-______________________-

首先我econ 好差, 以下未必一定岩晒。只係想discuss.

1. Giffen Good 為什麼不能於市場存在
首先giffen good 係lower the price, less people want it. 佢本身有一條upward sloping 既demand curve. 但係暫時呢個時候我地重未有野可以refute 到law of demand, 者係real situation 根本就無giffen good, 佢又何來可以係market exist?

2. rent 係expected income over and above opportunity cost.
但當一個seller 賣野, 佢一定會係個rent cover 自己produce good x 果陣既cost. (at least set a price which cost=price) 所以rent 有一part 一定係個production cost.

第三條唔係好明你想問咩

2008-06-12 15:37:09 補充：
SORRY 第一條諗錯野
Giffen good 應該話係一個inferior good 受到negativereal income effect 影響時 價錢低但demand 升...
但係-ve real income effect 之下, 同樣既$ 有多左既purchasing power. d 人就會turn 去買normal good 而唔係inferior good(eg 你有錢都去買洗衣機唔買洗衫板), 應該係導致inferior good 既demand 變低左, 而唔係上升