失业(unemployment)
失业(unemployment)
失业(unemployment)
Y=C+I+G+NX
Y=5000
G=1000
T=1000
C=250+0.75(Y-T)
I=1000-50r
NX=500-500ε
r=r*=5
a.在这个经济中,求出国民储蓄、投资、贸易余额以及均衡汇率。
b.现在G增加到1250,求出国民储蓄、投资、贸易余额以及均衡汇率的值。解释你的结果。
c.现在假设世界利率从5%上升到10%(G又是1000),求出国民储蓄、投资、贸易余额以及均衡汇率的值。解释你的结果。
Consider an economy described by the following equations:
Y=C+I+G+NX
y=5000
G=1000
T=1000
C=250+0.75(Y-T)
I=1000-50r
NX=500-500ε
r=r*=5
a.In this economy, solve for national saving, investment, the trade balance, and the equilibrium exchange rate.
b.Suppose now that G rises to 1,250. Solve for national saving, investment, the trade balance, and the equilibrium exchange rate. Explain what you find.
c.Now suppose that the world interest rate rises from 5 to 10 percent. (G is again 1,000). Solve for national saving, investment, the trade balance, and the equilibrium exchange rate. Explain what you find.
a.描述对财政紧缩(例如增加税收)做出反应会发生什么。把你的答案与小型开放经济的情况进行比较。
b.描述如果中央银行通过向公众购买债券来扩大货币供给,会发生什么变动。把你的答案与小型开放经济的情况进行比较。
Suppose that a large open economy has a fixed exchange rate.
a.Describe what happens in response to a fiscal contraction, such as a tax increase. Compare your answer to the ease of a small open economy.
b.Describe what happens if the central bank expands the money supply by buying bonds from the public. Compare your answer to the case of a small open economy.
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