作者tseng27 (小曾)
看板EconStudy
标题[考古] 94古慧雯个经一期中考
时间Wed Nov 16 01:00:49 2005
科目:个体经济学一
教授:古慧雯
试别:期中考
时间:2005/11/10
by tseng27
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总分32分。答题皆须附说明。未做解释的答案概不计分。
1.A的效用函数为: u = x + 2y
x单价为$1,y单价为$3,A所得为$10
(a) (2分) 请计算A之│MRS│ (=dy/dx)。
(b) (2分) A最适消费组合中会消费几单位x?
(c) (2分) 请绘x产品的Engel曲线。
(d) (2分) 请计算x产品的所得弹性。
(e) (2分) 若x价格自$1涨为$2,替代效果中,x的数量如何变化?
所得效果中,x的数量如何变化?
(f) (2分) 承前小题,请计算两物的交叉弹性。
2.假设杂志的市场为完全竞争,市场供给为正斜率,市场需求为负斜率。
今纸张价格下跌,印刷一本杂志的费用因此下降$10。
(a) (2分) 请绘图说明纸张下跌如何影响杂志的市场供给
(b) (2分) 请比较杂志均衡市价的变动(绝对值) 与$10之大小。
(c) (2分) 请绘出生产者剩余的变化。
(d) (2分) 假设每家杂志社的利润都增加2万元,此事被各杂志主笔知悉,纷纷要求
将每月专栏的主笔费提高1万元。请分析此举对於杂志价格的影响。
3.(3分) Chris buys coffee for $1 per cup and tea for %0.5 per cup; every day
she drinks 2 cups of coffee and 1 cup of tea. David buys coffee for
$0.5 per cup and tea for $1 per cup; every day he drinks 1 cup of
coffee and 2 cups of tea. Can you determine whether Chris and David
have identical tastes?
4.Freddie's income is $20 a month. In June, cookies cost $1 apiece, crackers
cost $1 apiece, and Freddie buys 5 cookies and 15 crackers. In July cookies
cost $1.5 apiece, crackers cost $0.5 apiece, and Freddie buys 9 cookies and
13 crackers.
(a) (4分) How is the general price movement from June to July? Please
calculate the Laspeyres price index. Is Freddie better off due to
this price change?
(b) (3分) Are crackers a normal or an inferior good for Freddie?
Exam75.ctx
∮完卷∮
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