課程名稱︰個體經濟學
課程性質︰系定必修
課程教師︰鄭秀玲
開課學院:社會學院
開課系所︰經濟系
考試日期(年月日)︰2009.03.19
考試時限(分鐘):2小時
是否需發放獎勵金:是 感謝
(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。
1. (12分) Laura's Internet Services firm can design computer systems according
to the function y = (K, L) = K^(1/3) L^(1/2) , where K is the amount of
Gigabyte storage she has available and L is the amount of labor hours she
employs. Currently, Laura has 125 gigabytes of storage. Please fill out the
following table and sketch the change in the marginal product of labor curve
for Laura's firm if she increase her gigabyte storage capacity to 216
L y(125, L) = 5*√L MPL y(216, L) = 6*√L MPL
1 ◆ ◆ ◆ ◆
2 ◆ ◆ ◆ ◆
3 ◆ ◆ ◆ ◆
4 ◆ ◆ ◆ ◆
5 ◆ ◆
2. (14分) Fill in the blanks in the following table:
Average Average
Fixed Variable Total Variable Total Marginal
Output Cost Cost Cost Cost Cost Cost
Q FC VC TC AVC AC MC
13 1125 975 ◆ ◆ ◆ ◆
14 ◆ 1120 ◆ ◆ ◆ ◆
15 ◆ 1275 ◆ ◆ ◆ ◆
16 ◆ ◆ ◆ 90 ◆ ◆
17 ◆ ◆ ◆ 95 ◆
3. (5分) Suppose that production function is f(x1,x2) = (x1^a + x2^a)^b, where
a and b are positive constants. For what positive values of a and b are
there decreasing returns to scale?
4. (14分) 請繪圖說明如何從短期之邊際成本曲線導出長期之邊際成本曲線
(for both the discrete level of plant size continuous level of plant size).
5 (14分) 假設廠商一個月內生產一單位的成衣,需同時使用一台裁縫機與三個裁縫女工
(亦即一台機器分三班使用),如果機器購置成本為10萬元(假設使用年限為一個月),每
位女工的月薪為3萬元,試問:
(1) 該成衣廠的生產函數為何?
(2) 該成衣廠的長期成本函數為何?
(3) 長期下,假設工廠預定的生產數量為30單位,則女工與裁縫的最適雇用量為何?
6. (15分) 假設某專門生產電腦排線的電子加工廠,其所需的生產要素包括負責切割的機
器設備(K)與專司組裝勞工(L),其生產函數如下:Q = √L*√K,如果該機設設備每組
為27萬元,組裝工人薪資為3萬元,且訂單數量為30單位,試問:
(1) 短期下如果該電子加工廠的機械設備為4台,則該工廠的勞動雇用量為何?其生產
成本為何?
(2) 長期下,該電子加工廠廠長決定調整機器設備的數量,以利於降低生產成本,請問
該廠長會購置多少機械設備與雇用多少勞工?其生產成本為何?
(3) 比較(1)與(2)生產成本的大小,試說明短期生產成本與長期生產成本的關係。
7. (6分) The market demand for a type of carpet known as KP-7 has been
estimated as : P = 40 - 0.25Q , where P is price ($/yard) and Q is quantity
of sales (hundreds of yards per month). The market supply is expressed as :
P = 5 + 0.05Q , A typical firm in this competitive market has a total cost
function given as : C = 100 - 20q + 2*q^2 , where q is the quantity of sales
for this firm,
(1) Determine the output for a typical firm, which can maximize firm's
profit.
(2) Determine the profit (or loss) earned by the typical firm by producing
the above output.
8. (14分) 假設某廠商的生產函數如下:
Q = f(L,K) = (α* L^ρ + β* K^ρ)^(ψ/ρ),α+β=1,ρ<1,ρ≠1,α,β,ψ>0
其中L為勞動投入,K為資本投入,Q為生產量,試問:
(1) 此生產函數的替代彈性為何?
(2) 在ψ的值為多少時?此生產函數為固定規模報酬?
9. (10分) 請說明下列生產者的生產行為,以及其所投入的生產要素和產出:
(可以有multiple output and multiple inputs)
(1) 銀行; (2) 大學生(四年求學生活)。
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