(2) 可能之補救方法(10%)。

Question 1 Consider a quantity-competition oligopolistic market. There are 9 firms and each firm has a cost C(q)=0.28q+1.6. Suppose that market demand is Q=1,000-1,000P. Answer the following questions. Find firm's output q= _______ and profit π= _______ market price P= _______ and output Q= _______

(a) Calculate monopoly quantity Qm= _______ monopoly profit π= _______ and social surplus SSm= _______

(b) Under the first best pricing regulation, calculate monopoly quantity Q= _______ monopoly profit π= _______ and social surplus SS＜sub＞f＜/sub＞= _______

(a) Suppose that these two firms compete in quantity (Cournot competition). Calculate firm's output qi= _______ firm 1's profit π1= _______

(b) Suppose that these two firms collude in quantity (Cartel collusion). Calculate firm's output qi = _______ firm 1's profit π1= _______

(c) Suppose that firm 1 is a quantity setter and firm 2 is a quantity follower (Stackelberg competition). Calculate firm 1's output q1= _______ and profit π1= _______

(a) Find the demand of dominant firm Dd= _______

(b) Suppose marginal cost of dominant firm is MCd=5,000. Find market price P= _______ the output of dominant firm Qd= _______ and the output of fringe firms Qs= _______

Problem 1Suppose that the monetary base in an economy is $100 billion and currency drain ratio is 5%. People deposit 80% of currency in saving deposit with the required reserve ratio R1=10% and deposit the rest of currency in time deposit with R2=5%. Money is created through the process of deposit and loan in the banking system.  Explain the process of money creation. _________Calculate the money supply M = ________ of this banking system.Calculate the monetary multiplier M/B = ________ of this banking system.

Problem 2. An economy is operating with output $408 billion below its natural rate, and fiscal policymakers want to close this recessionary gap. The central bank agrees to adjust the money supply to hold the interest rate constant, so there is no crowding out. The marginal propensity to consume is 0.9, the marginal propensity to import is 0.1, and the tax rate is 0.05. The price level is completely fixed in the short run. In what direction and by how much would government spending need to change to close the recessionary gap? _____________ Explain your thinking in the AE graph and in words._____________ 

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