推 wayne651 :也太快= = 04/19 16:22
推 TINTINH :已收精華區:) 04/19 22:36
課程名稱︰ 個體經濟學二
課程性質︰ 必修
課程教師︰ 黃貞穎
開課學院： 社科院
開課系所︰ 經濟系
考試日期（年月日）︰ 2010/04/19
考試時限（分鐘）：120
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1. Nokia, a mobile phone producer, uses three inputs, capital (K), labor (L),
and natural resource (N). Nokia’s production function is characterized by
y = min{K,(L*N)^0.5},
where y is the number of phones produced. Nokia is a profit-maximizing
firm.
(a) (10%) Does Nokia’s production function exhibit increasing return to
scale? Explain.
(b) (15%) Assume that Nokia is a price-taker in input markets. Suppose
the unit price of K, L, N is r, w, t respectively. In the short run, K
is fixed at a level K'. Derive Nokia’s short run cost function. Is the
short run average cost constant in y? Explain.
(c) (20%) Assume that Nokia is a price-taker in input markets. Suppose
the unit price of K, L, N is r, w, t respectively. Derive Nokias
long run cost function. Is the long run average cost constant in y?
Explain.
(d) (15%) Assume that Nokia is a price taker in the mobile phone industry.
Can you predict what the price of a mobile phone is based on
your answer to (c)?
2.Airliner Bar sells drinks in a perfectly competitive market. Bars take
input prices as constant, independent of their production of drinks. Their
production costs are all the same. For each of the following situations,
illustrate using graphs regarding how the circumstances being described
might affect the price and quantity of drinks sold at the Airliner Bar
and the bar industry as a whole in the short rub (when the number of
firms is fixed) and in the long run (when entry and exit have completed)
respectively
(a) (20%) The wholesale price of liquor goes up. (Hint: This case is
similar to the situatiob where a quantity tax is imposed.)
(b) (20%) The yearly price of liquor licenses goes up. (Hint: Interpret
the price of liquor license as the quasi fixed cost which will not affect
the marginal cost of a firm.)
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