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标题[试题] 1001 郑鸿章老师 个体经济学 期中考
时间Mon Nov 21 14:51:11 2011
课程名称：个体经济学
课程性质：必修
课程范围：第1~3章 (introduction~indifference curve)
开课教师：郑鸿章
开课学院：商学院
开课系级：国贸系
考试日期(年月日)：2011/11/18
考试时限(Mins)：100分
试题本文：
一、简答暨是非题 (30%)
1.Describe the indifference curves assoiciated with two goods that are perfect
substitutes. What if they are perfect complements?
2. If Jane is currently willing to trade 4 movie tickets for 1 basketball
ticket, then she must like basketball better than movies. True or false?
Explain.
3.请推导出Marshallian demand curve,并解释其经济意义
二、申论暨计算题
(一). The table below shows the retail price and sales for instant coffee and
roasted coffee for 1997 and 1998.
Retail Price of Sales of Retail Price of Sales of
Instant Coffee Instant Coffee Roasted Coffee Roasted Coffee
Year ($/Lb) (Million Lbs) ($/Lb) (Million Lbs)
1997 10.35 75 4.11 820
1998 10.48 70 3.76 850
a. Using these data alone, estimate the short-run price elasicity of demand
for roasted coffee. Derive a linear demand curve for roasted coffee. (5%)
b. Now estimate the short-run price elasticity of demand for instant coffee.
Derive a linear demand curve for instant coffee. (5%)
c. Which coffee has the higher short-run price elasticity of demand? Why do
you think this is the case? (5%)
(二).Suppose that Bridget and Erin spend teir incomes on two goods, food(F)
and clothing(C). Bridget's preferences are represented by the utility function
U(F,C) = 10 ×FC, while Erin's [reference are represented by the utility
function U(F,C) = 0.2 (FC)^2.
a. With food on the horizontal axis and clothing on the vertical axis, identify
on a graph the set of points that give Bridget the same level of utility as the
bundle (10,5). Do the same for Erin on a separate graph. (5%)
b. On the same two graphs, identify the set of bundles that give Bridget and
Erin the same level of utility as the bundle of (15,8). (5%)
c. Do you think Bridget and Erin have the same preferences or different
preferences? Explain. (5%)
(三)若市场供需如下: (20%)
D: p = 180 - q
S: p = 20 + 10q
若政府对每单位货课徵5元从量税,则
a.物价上涨多少元?
b.消费者与生产者各负担多少税?
(四) 若某农产品市场供需如下: (20%)
D:qt = 360 - pt //pt为t期的价格 qt为q期的数量
S:qt = 120 + 2p(t-1) //p(t-1)为t-1期的价格 qt为q期的数量
则a.市场均衡价格为何?
b.若p1 = 100,则p3 = ?
c.均衡点是否为稳定均衡,说明之.
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