課程名稱︰經濟學甲
課程性質︰系定必修
課程教師︰吳忠吉 教授
開課系所︰工管系工管組
考試時間︰94.11.07
試題 :
一、選擇題(35%)每題5分，只需寫出正確答案即可。
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) 必為負斜率
(C) 是效用函數的圖形代表 (D) 若值為5，代表比3效用多2
6.下列何者為 normative economics的分析範圍?
(A) 鑽石與水熟貴之分析
(B) 累進稅率是否符合「社會正義」
(C) 分析「要向甲課多少污染稅才能達到柏拉圖最適(Pareto optimum)」
(D) 分析「何種投票制度可以使選民偏好與選舉結果的平方誤差最小(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、簡答計算題(90%)
1.(20%)消費者均衡: 1.5
甲將其所得全部消費 X、Y 兩項商品，其效用函數: U(X,Y)=X Y，已知X及Y的價格
分別為3元及4元，所得為150元，請問在追成最大效用的前提之下，甲會購買多少單位
的X及Y？(請寫出 budget line 及均衡式)
2.(10%)張媽媽到市場買牛肉從來不問價錢，每次都買兩斤牛肉；陳媽媽買牛肉也從來不
問價錢，每次都買200元牛肉。請位她們對牛肉的需求彈性是否相同?如果相同，是多少?
如果不同，又分別是多少? (簡述即可)
3.(10%)小乙對巧克力的需求函數為P(X)=49-6X，其中X代表巧克力的消費量。當價格為7塊
時，他購買了7顆巧克力；當價格上升至13塊時，小乙的消費者剩餘為多少?
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%)請以各彈性表示下列財貨
(1) Normal goods
(2) Inferior goods
(3) Complement goods
(4) Giffen goods (10%)
三、作圖題(25%)
1.(10%) 當X財為neutral goods時，請用無異曲線畫出必為負斜率的需求線。
(hint:中性財代表所得效果為?，根據 Hicks 分析法...)
2.(15%) 針對下述一段話，作圖並簡單說明對供需的影響，並請以箭頭符號標示市場均衡
價、量的變化:
『中央氣象局預測目前在台灣西南西方1000公里的強烈颱風 Kitty，將挾帶豪大雨直撲
台灣而來，預期 Kitty將對台灣的農作物造成極大的影響』，請問:
(1)對青蔥的影響(說明6%，圖4%)
(2)對豆芽菜的影響(說明3%，圖2%)
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