From individual to market demand Functions e When all consumers are price-takers, the market demand function for commodity j is X」(P1,P2m,…,m2)=∑x(Pp1P2,mh)From Individual to Market Demand Functions ◆When all consumers are price-takers, the market demand function for commodity j is Xj p p m m n xj i p p m i i n ( , , , , ) ( , , ). * 1 2 1 1 2 1  = = 