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課程名稱︰個體經濟學
課程性質︰經濟系大二必修
課程教師︰鄭秀玲
開課學院：社科院
開課系所︰經濟系
考試日期（年月日）︰1/17/2008
考試時限（分鐘）：120分鐘
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
以下各題均須寫出詳細推導過程(繪圖或數學式)，才予給分。
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Q1.(10分)Here is a table of pricesand the demand of a consumer named David
whose behavior was observed in 5 different price-income situations.
Situation P1 P2 x1 x2
A 1 1 5 35
B 1 2 35 10
C 1 1 10 15
D 3 1 5 15
E 1 2 10 10
Is David's behavior consistent with the Week Axiom of Reavealed Preferences？
Q2.(15分)Consider a comparative market for which the quantities demanded and
supplied (per year) at various prices are given as follows：
price demand supply
$ (million) (millions)
60 22 14
80 20 16
100 18 18
120 16 20
a. Calculate the price elasticity of demand when the price is $80. When the
price is $100.
b. Calculate the price elasticity of supply when the price is $80. When the
price is $100.
c. What are the equilibrium price and quantity？
d. Suppose the government sets a price ceiling of $80. Will there be a
shortage, and if so, how large will it be？
Q3.(10分)請以數學是倒出以下敘述：
If the firm is maximizing profits, then the value of the marginal product of
each factor that is free to vary must equal its factor price.
Q4.(10分) The world demand for power transmission wire is made up of both
dosmestic and foreign demands. Thus the total demand is the sum of the two
sub-demands, which are given as:
Domestic demand: Pd = 5-0.005Qd
Foreign demand: Pf = 3-0.00075Qf ,
where Pd and Pf are in dollars per pound, and Qd and Qf are in pounds per day.
Determine the world demand for power transmission wire.
Q5.(15分)請繪圖說明以下敘述:
Many elderly people have Social Security payments as their sole source of
income. Because of this ,ther have been attempts to adjust Social Security
payments in a way that will keep purchasing power constant even prices change.
One indexing proposal goes as follows. In the base year b, economics measure
the average consumption bundle of senior citizens. In each subsequent year the
Social Security system adjusts payments so that the "purchasing power" of the
average senior citizen remains constant in the sense that the average Social
Security recipient is just able to afford the consumption bundle available in
year b. One curios result of the indexing scheme is that the average seniior
citizen will almost always be better off than he or she was in the base year b.
Q6.(15分)假設股票市場的供需函數如下：
Qd =a-b(Pd)
Qs =c+d(Ps)
如果政府每單位給予生產者s元的補貼，則生產者與消費者可以分別享有的補貼為何？
Q7.(13分)請繪圖說明以下敘述:
若需求曲線相對於供給曲線較無彈性，則租稅較容易轉嫁給消費者。
Q8.(12分)請說明以下 elasticity and total revenue(R)數學式的經濟意涵：
△R/△p = q(p)〔1-∣ε(p)∣〕
△R/△q = p(q)〔1-1/∣ε(q)∣〕
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