市场供给与均衡 | 武大经济学课

总结于武大经济学课

一：Supply Side

Understand Some Terms

• Supply or quantity supplied:

  • the amount that a seller is willing and able to sell
  • Individual Supply
  • Market Supply

• Condition of Supply

  • ability
  • will

• Determinants of Supply

• Supply Schedule and Supply Curve: Effects of Price on Supply

• Forces behind Supply Curve: Non-price Factors

  • Technology
  • Factor prices (costs)
  • Price of related goods
    • Joint product such as beef and cowhide
    • Substitutes (in supply side) such as truck and car
  • Government policy
  • Special influences

• Changes in Quantity Supplied versus Changes in Supply

Fig. 1 Fig. 2

二：Market Equilibrium: Put the Supply and Demand together

• What Do We Mean by Equilibrium
  • Equality of S and D (Two opposite forces)
  • A situation that will not change if other things hold unchanged
  • An optimal outcome for agents concerned
• Market Mechanism and the Formation of Equilibrium Price
  • S > D, → P ↑
  • S < D, → P ↑

Fig. 3 Fig. 4