第4部分 个人与市场需求.pptVIP

Chapter 1 Chapter 4 Individual and Market Demand quiz Translate English into Chinese supply v.s demand Market equilibrium v.s market clearing price Changes in demand v.s changes in quantity demanded Shortage v.s surplus Competitive v.s noncompetitive Elastisity Price ceiling and price floor Quiz(2) Tell the preference assumptions 无差异曲线与预算线 边际替代率与边际效用 Topics to be Discussed Individual Demand Income and Substitution Effects Market Demand Consumer Surplus Topics to be Discussed *Network Externalities Individual Demand Price Changes Using the figures developed in the previous chapter, the impact of a change in the price of food can be illustrated using indifference curves. Effect of a Price Change Effect of a Price Change Effect of a Price Change Individual Demand Two Important Properties of Demand Curves 1) The level of utility that can be attained changes as we move along the curve. Individual Demand Two Important Properties of Demand Curves 2) At every point on the demand curve, the consumer is maximizing utility by satisfying the condition that the MRS of food for clothing equals the ratio of the prices of food and clothing. Effect of a Price Change Individual Demand Income Changes Using the figures developed in the previous chapter, the impact of a change in the income can be illustrated using indifference curves. Effects of Income Changes Effects of Income Changes Individual Demand Income Changes The income-consumption curve traces out the utility-maximizing combinations of food and clothing associated with every income level. Individual Demand Income Changes An increase in income shifts the budget line to the right, increasing consumption along the income-consumption curve. Simultaneously, the increase in income shifts the demand curve to the right. Individual Demand Income Changes When the income-consumption curve has a positive slope: The quantity demanded increases with income. The income elasticity of demand is positive. The good