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1) All points of tangency between the indifference curves are efficient. 2) The contract curve shows all allocations that are Pareto efficient. ?Pareto efficient allocation occurs when trade will make someone worse off. ? 在兩個(gè)消費(fèi)者的無(wú)差異曲線相切的各點(diǎn)上,邊際替代率相等。因此,契約曲線上的任何一點(diǎn)都滿足交換的帕累托最優(yōu)條件。契約曲線的軌跡是帕累托最優(yōu)軌跡,曲線上的交換都是最大滿足的交換 生產(chǎn)的效率 ?交換的效率描述了兩種商品交換中實(shí)現(xiàn)有效配置所要求的條件,現(xiàn)在考察生產(chǎn)過(guò)程中投入品的有效使用 —— 也就是生產(chǎn)的效率 Production in the Edgeworth Box ? 每個(gè)軸度量投入的數(shù)量 ?Horizontal: Labor, 50 hours ?Vertical: Capital, 30 hours ? 兩個(gè)原點(diǎn)對(duì)應(yīng)兩種產(chǎn)品產(chǎn)出 ?OF = Food ?OC = Clothing 60F 50F 40L 30L Labor in clothing production Efficiency in Production 50L 0C 0F 30K Capital in clothing production 20L 10L 20K 10K 10L 20L 30L 40L 50L Capital in food production 10K 20K 30K 30C 25C 10C 80F Labor in Food Production B C D A Efficiency ?A is inefficient ?Shaded area is preferred to A ?B and C are efficient ?The production contract curve shows all binations that are efficient Competitive Market Observations ? 投入品市場(chǎng)是競(jìng)爭(zhēng)的情況下, wage rate (w)和 price of capital (r)對(duì)于所有行業(yè)都相等 ? Minimize production cost ? MPL/MPK = w/r ? w/r = MRTSLK ? MRTS = slope of the isoquant ? 競(jìng)爭(zhēng)均衡位于 生產(chǎn)契約曲線 上 ? 競(jìng)爭(zhēng)均衡是有效率的 60F 50F 40L 30L Labor in clothing production Efficiency in Production 50L 0C 0F 30K Capital in clothing production 20L 10L 20K 10K 10L 20L 30L 40L 50L Capital in food production 10K 20K 30K 30C 25C 10C 80F Labor in Food Production B C D A Discuss the adjustment process that would Move the producers from A to B or C. 交換和生產(chǎn)的效率 ?將交換和生產(chǎn)結(jié)合起來(lái),從生產(chǎn)方面開(kāi)始討論,再過(guò)渡到消費(fèi)問(wèn)題 ?假定有兩個(gè)消費(fèi)者,在兩種產(chǎn)品間選擇,以及兩個(gè)生產(chǎn)者,在兩種要素 L與 K間進(jìn)行選擇以生產(chǎn)兩種產(chǎn)品 從生產(chǎn)契約曲線到生產(chǎn)可能性曲線 ? The Production Possibilities Frontier生產(chǎn)可能性邊界 ? 生產(chǎn)可能性邊界顯示了用固定總額的勞動(dòng)和資本投入可以生產(chǎn)出來(lái)的各種食品和服裝的組合 .( 50L, 30K) ? 可以從契約曲線推導(dǎo)而來(lái),或者是它的另一種表示方法,都表明的是最優(yōu)產(chǎn)出量 ?A點(diǎn)產(chǎn)出( 50F , 25C)、 B點(diǎn)產(chǎn)出( 50F,30C)、C點(diǎn)產(chǎn)出( 60F,25C) ?也稱為生產(chǎn)可能性曲線、產(chǎn)品轉(zhuǎn)換曲線 Production Possibilities Frontier Food (Units) Clothing (units) B, C, amp。 D ar