※ [本文转录自 NTU-Exam 看板] 作者: jhongyi (~颐) 看板: NTU-Exam 标题: [试题] 94上 吴忠吉经济学甲 工管系工管组期中考考题 时间: Sun Nov 13 12:21:56 2005 课程名称︰经济学甲 课程性质︰系定必修 课程教师︰吴忠吉 教授 开课系所︰工管系工管组 考试时间︰94.11.07 试题 : 一、选择题(35%)每题5分，只需写出正确答案即可。 1.Which of the following will not cause a nation's production possibilities curve to shift out? (A) An improvement in technology. (B) An improvement in size of the labor force. (C) An improvement in education attainment and skills of the labor force. (D) Reduction in unemployment. 2.Suppose the price of nylon windbreakers,a substitute for sweatshirts,goes up. What effect do you expect this to have on the sweatshirt market? (A) Supply curve shift outward, equilibrium price decreases. (B) Supply curve shift inward, equilibrium price increases. (C) Demand curve shift outward, equilibrium price increases. (D) Demand curve shift inward, equilibrium price decreases. 3.If marginal utility is positive diminishing, then total utility must be (A) Decreasing (B) Positive and rising at an increasing rate. (C) Positive and rising at an decreasing rate. (D) Positive and rising at any rate. 4.If the MU of an extra hamburger is 8 units, the MU of a soft drink is 5 units, the price of hamburger is $1,and the price of a soft drink is 50 cents,then the consumer can achieve equilibrium by (A) Buying more hamburgers. (B) Buying more soft drinks. (C) Increasing the price of soft drinks. (D) Decreasing the price of hamburgers. 5.Which of the following description about indifferent curve is correct? (A) 是有可能相交 (B) 必为负斜率 (C) 是效用函数的图形代表 (D) 若值为5，代表比3效用多2 6.下列何者为 normative economics的分析范围? (A) 钻石与水熟贵之分析 (B) 累进税率是否符合「社会正义」 (C) 分析「要向甲课多少污染税才能达到柏拉图最适(Pareto optimum)」 (D) 分析「何种投票制度可以使选民偏好与选举结果的平方误差最小(mean square error)」 7.The study of economics exists because (A) Resources are overly abundant as compares to wants: hance, an allocation problem exists. (B) The market system is an obstacle to the efficient use of plentiful resources to satisfy constrained want. (C) Resources are scare in relation to human wants. (D) Goverment interferes with the efficient allocation of scare resources. 二、简答计算题(90%) 1.(20%)消费者均衡: 1.5 甲将其所得全部消费 X、Y 两项商品，其效用函数: U(X,Y)=X Y，已知X及Y的价格 分别为3元及4元，所得为150元，请问在追成最大效用的前提之下，甲会购买多少单位 的X及Y？(请写出 budget line 及均衡式) 2.(10%)张妈妈到市场买牛肉从来不问价钱，每次都买两斤牛肉；陈妈妈买牛肉也从来不 问价钱，每次都买200元牛肉。请位她们对牛肉的需求弹性是否相同?如果相同，是多少? 如果不同，又分别是多少? (简述即可) 3.(10%)小乙对巧克力的需求函数为P(X)=49-6X，其中X代表巧克力的消费量。当价格为7块 时，他购买了7颗巧克力；当价格上升至13块时，小乙的消费者剩余为多少? 4.(25%) A competitive industry cintains 200 firms, each of which has a firm supply curve given by: s { Q =2P P>2 or P=2 s { s if where Q is firm quantity supplied(per week) and P { Q =0 P<2 is market price per unit.Find the industry supply curve and draw the graph (15%),and calculate market equilibrium price quantity(10%) for the market demand curve is Qd=4000-100P (Qd:the market quantity demanded) 5.(25%)请以各弹性表示下列财货 (1) Normal goods (2) Inferior goods (3) Complement goods (4) Giffen goods (10%) 三、作图题(25%) 1.(10%) 当X财为neutral goods时，请用无异曲线画出必为负斜率的需求线。 (hint:中性财代表所得效果为?，根据 Hicks 分析法...) 2.(15%) 针对下述一段话，作图并简单说明对供需的影响，并请以箭头符号标示市场均衡 价、量的变化: 『中央气象局预测目前在台湾西南西方1000公里的强烈台风 Kitty，将挟带豪大雨直扑 台湾而来，预期 Kitty将对台湾的农作物造成极大的影响』，请问: (1)对青葱的影响(说明6%，图4%) (2)对豆芽菜的影响(说明3%，图2%) --

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