微观课后答案第三章（After microcosmic, answer third chapters）.docVIP

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微观课后答案第三章（After microcosmic, answer third chapters）.doc

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微观课后答案第三章（After microcosmic, answer third chapters）

微观课后答案第三章（After microcosmic, answer third chapters） The third chapter exercises questions and answers 1, given a shirt for the price of 80 yuan, a KFC fast food for the price of 20 yuan, in the equilibrium point of a consumer of these two kinds of goods to maximize utility, how much is the marginal substitution rate of MRS for shirts a KFC fast food? Solution: according to the definition of the formula two commodity marginal substitution rate of MRS, can be a KFC fast food for shirts in the marginal substitution rate: Where X represents the number of copies of KFC fast food; Y shirt number; MRS said in the premise of maintaining the level of utility at the same time, the number of consumers to give up shirt consumption increase a KFC fast food. When the consumer realizes the maximum utility of the two goods, there is a MRSxy =Px/Py at the equilibrium point That is, MRSxy =20/80=0.25 It shows that: in the equilibrium point of the utility maximization, the consumer about a KFC fast-food marginal substitution rate of MRS was 0.25 for shirts. 2 assume the equilibrium of a consumer as shown in figure 1-9. Among them, the horizontal axis OX1 and the vertical axis OX2 represent the quantity of goods 1 and goods 2 respectively, and the line segment AB is the consumers budget line, and the curve U is the indifference curve of consumers, and the E point is the equilibrium point of the utility maximization. The price of the known commodity 1 is P1=2 yuan. (1) seeking the income of consumers; (2) seeking the top grade price P2; (3) write the equation of the budget line; (4) estimate the slope of the budget line; (5) the value of the MRS12 of the E point. Solution: (1) the cross intercept in the figure represents the income of the consumer. 1 of the total quantity of the purchased goods is 30 units, and the known P1=2 yuan, so the income of the consumer is M=2 yuan * 30=60. (2) the longitudinal intercept in the figure represents the income of the consumer; the quantity of all pu