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試回答下列問題, 並輔以圖形說明:
1. 設 A 國的供給與需求函數分別為 Q = −30 + 4P 與 Q = 110 − 3P 試求 均衡價格與數量。
2. 設 B 國的供給與需求函數分別為 Q = −10 + 2P 與 Q = 200 − 5P 試求 均衡價格與數量。
3. 在A 國為小國的假設下若世界價格為 25 ,請問貿易後A 國貿易量與價格 為何, 若該國施以每單位 5 的出口補貼, 請問補貼後 A 國價格與補貼額為 何。
4. 在 B 國為小國的假設下若世界價格為 25 , 請問貿易後 B 國貿易量與價格 為何,若該國施以每單位5的關稅,請問關稅後B 國價格與關稅收入為何。
5. 若 A 與B 均為大國,請問貿易後貿易量與價格為何。
6. 若 A 與B 均為大國,若出口國施以 5的出口補貼時,試問貿易價格、 補貼 為何。
7. 若 A 與 B 均為大國, 若進口國施以 15 的進口配額時, 試問進口國價格與 配額租為何。
8. 若A 與B 均為大國,若進口國施以 5的生產補貼時, 試問進口國價格與補 貼額為何。
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