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【正文】 Test 2 : 如果 A1(50X,60Y),B1(130X,20Y),C1(70X,80Y),則該國(guó)出口量是多少，進(jìn)口量是多少，貿(mào)易所得是多少？ 如果 A2(80X,40Y),B2(40X,120Y),C2(100X,60Y),則該國(guó)出口量是多少，進(jìn)口量是多少，貿(mào)易所得是多少？ X Y X Y A1 B1 C1 A2 B2 C2 Nation 1 Nation 2 Copyright Joanna GUO CIB ShenYang Normal University Review ? Step 1 Equilibrium in Isolation to know the parative advantage in each nation ? Step 2 Seek out the world price ? Step 3 Point out the production point and consumer point after trade ? Step 4 Draw trade triangle 惟一的 不完全專(zhuān)業(yè)化 全等的 貿(mào)易是否獲利 相對(duì)價(jià)格 Copyright Joanna GUO CIB ShenYang Normal University The gains from trade 0 10 30 50 70 90 110 130 150 170 20 40 60 80 100 120 Y X B A E1 E2 Pw=1 Pw=PB=1 I 1 I 2 A— E1 is exchange gains。 E’(100X,60Y) Copyright Joanna GUO CIB ShenYang Normal University amp。 E(70X,80Y) A’(80X,40Y)。 Copyright Joanna GUO CIB ShenYang Normal University Marginal rate of substitution (MRS) 邊際替代率 ? MRS of X for Y (MRSXY) refers to the amount of Y that a nation give up for one unit of X and still remain on the same indifference curve ? MRSXY =tgβ =PXY ? It declines as the nation moves down the curve. T X Y β Copyright Joanna GUO CIB ShenYang Normal University Review 2: CIC 雪糕 汽水 u1 雪糕 汽水 u1 雪糕 汽水 u1 雪糕 汽水 u1 雪糕 汽水 u1 Copyright Joanna GUO CIB ShenYang Normal University 良好形狀偏好 ? Negatively sloped ? Convex from the origin ? Higher curves refer to greater satisfaction, lower curves to less satisfaction ? They must not cross T X Y 較好消費(fèi)束 較差消費(fèi)束 Copyright Joanna GUO CIB ShenYang Normal University Community Indifference Curves 社會(huì)無(wú)差異曲線(xiàn) ? Shows the various binations of two modities that yield equal satisfa
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