经济学均衡价格英语讲解

1、school of mathematics and statisticsl mathematics and information science（信息科学）l statistics （统计学）lmathetistics and applied mathematics（应用数学） financial speciality（金融方向） normal speciality （师范方向）three majorsmicroeconomics微观经济学微观经济学均衡价格how price are determinted in the markets?mwhy the price of apple is

2、two yuan a kilo, rather than five cents or ten yuan？ two yuan/kilodemand function（需求函数需求函数)& supply function（供给函数供给函数）According to the theory of western economists , when all other things(except price) remain constant ,the quantity of demand and supply have a functional relationship with the pri

3、ce of commiodity(商品)Qs quantity supplyQd quantity demandp price（参数）functional relationship(函数关系)mdemand function curvemQd=f(p)=-pmsupply function curve mQs=f(p)=-+pPQPQthe demand curve slops downloads from left to right,indicating that the quantity demand increase as the price falls. the higher the

4、price is, the lower will be the quantity demand.the suply curve indicating that the higher the price, the greater will be the quantity supplyEQUILIBRIUM PRICE (EQUILIBRIUM PRICE (均衡价格均衡价格) )mequlibibrium price arise when all the goods in the market will be cleared at that price mwhen we put the two curves in the same coordinate system(坐标系),we will get the equlibriumprice and equlibrium quantity, they are prensented by the intersection point.mprice ceilingmif the price is lower than the equlibrium, there will be a shortage ；because the quantity demand exceeds the quantity suppliedmpric