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標題: [Econ] Which of the following violates the law of demand? [打印本頁]

作者: yingjaiv0v 時間: 2016-6-19 02:09 PM 標題: Which of the following violates the law of demand?

Hello, 臨近econ考試, 我想清一清concept,麻煩唒大家發表高見xd

我想問其實perfectly inelastic demand 同 perfectly elastic demand有無violate到the law of demand?
前者(perfectly inelastic)無論個price點變 qd都一樣咁係唔係就係所謂 violate左the law of demand?

後者(perfectly elastic) price 升 qd 趺到0 但 price 趺 qd係咪會升到無限? (因為幅圖唔會睇得出呢點, 有d唔肯定所以係到問下)
咁既話佢係咪都叫做符合law of demand?
thanks a lot

[ 本帖最後由 yingjaiv0v 於 2016-6-20 07:04 PM 編輯 ]

作者: my1433 時間: 2016-6-19 05:38 PM

當然violate law of demand啦
perfectly inelastic demand係when P changes, Qd does NOT change, 而唔會跌到0
Perfectly elastic可以理解成Even when P does not change, Qd can change.
Add oil

作者: leather 時間: 2016-6-20 10:19 AM

作者: yingjaiv0v 時間: 2016-6-20 07:03 PM

引用:

原帖由 my1433 於 2016-6-19 05:38 PM 發表
當然violate law of demand啦
perfectly inelastic demand係when P changes, Qd does NOT change, 而唔會跌到0
Perfectly elastic可以理解成Even when P does not change, Qd can change.
Add oil

sorry我打字個陣將兩者調轉左打xd 所以係兩個都violate左定只係perfectly inelastic demand violate左?
thanks a lot!

作者: my1433 時間: 2016-6-23 01:32 PM 標題: 回覆 4# yingjaiv0v 的帖子

Yes

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