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Part 2

Section A: Short questions

1. Explain what the impossible trinity is, and provide examples of it.

其他申論題

(a) Express the aggregate capital evolution equation.

(b) Express the capital evolution equation in terms of and the model parameters. State the necessary assumption for this derivation.

(c) Draw a graph to show that this econon omy will reach a long run equilib- rium with a constant . State the nece essary assumptions to have this long run equilibrium. Provide the economic meanings of your assumptions.

(d) Consider the case that the economy encounters a sudden increase of labor input due to immigration. Given the fixed growth rate n, what is the short and long run effect of this sudden increase in N on i? Assume that when the sudden increase happens, the economy is in its long run equilibrium.

(a) Discuss the impacts of this fiscal policy to interest rate and GDP for the home country and the foreign country under a fixed exchange rate regime.

(b) Discuss the impacts of this fiscal policy to interest rate and GDP for the home country and the foreign country under a flexiblet exchange rate regime.

(c) Explain your answers of (a) and (b) flexible

(a) Suppose there is a positive temporary TFP shock (assume the wealth effect is negligible). Find the effects on output and the current account. Is the current account predicted to be procyclical or countercyclical?

(b) Suppose the world real interest rate falls. Explain whether output and the current account move in opposite directions in response to this shock.

1.國軍「諮詢服務專線」號碼為________________。

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