作者Tesngray (Tesngray)
看板Economics
標題[討論] 獨占市場開放與完全競爭市場貿易?
時間Thu Feb 7 15:28:53 2013
政大題目如下:
Suppose in a country, there is one firm in an industry. suppose also
there is infinite number of firms producing the same good in the rest
of world. What is the possible impact on welfare when the country
opening up to trade?
(a) There will be no deadweight loss in the country
(b) The deadweight loss still exists but smaller under trade.
(c) the deadweight loss is larger under trade.
(d) the producer surplus is larger under trade.
思考之後我選擇(A) ,因為開放貿易,廠商就會面臨到完全競爭市場的成本優勢
而把價格調整成P=MC.
不過有同學反應說是(B)
說獨占市場不會完全變成完全競爭市場。
有大大可以幫忙解惑嗎? 感謝
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1F:推 Dukoff:獨佔本身有的優勢,不一定外商進來就可以馬上讓國內完全競 02/07 16:00
2F:→ Dukoff:爭。且外商一進來,看到原本消費者可接受高定價,應不會立 02/07 16:01
3F:→ Dukoff:刻讓自己用完全競爭的定價方式 02/07 16:01
4F:推 moondark92:infinite number...少數廠商進來可能不會,但無限廠商.. 02/08 18:26
5F:推 h6218790831:一般會說沒有交易成本、運費等等問題,也不考慮情感因 02/11 17:45
6F:→ h6218790831:素,一樓指的優勢是這個吧?? 02/11 17:45
7F:→ h6218790831:除非要考慮到純粹性競爭,才不能選(A) 02/11 17:46
8F:推 mystage:考試要選A 因為假設就是理想狀態,現實中沒有所謂理想狀態 02/17 10:45