Question
Consider an economy of two consumers, i = A , B , and two goods, x 1 and x 2. Consumer A has income mA
Consider an economy of two consumers, i = A,B, and two goods, x1 and x2. Consumer A has income mA and utility function
uA(x1,x2) = lnx1 +lnx2. Consumer B has income mB and utility function
uB(x1,x2) = 2lnx1 +lnx2. The price of x1 is p1. The price of x2 is p2.
a. Write down the utility maximization problem of each consumer. 2
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b. Solve the utility maximization problems of two consumers. Denote the solution as x1i (p1, p2,mi), x 2i ( p 1 , p 2 , m i ) .
c. What are the market demand functions for x1 and x2? (The market demand for x1 is simply the summation of the quantities demanded by consumer
AB A, x1 , and consumer B, x1 .)
d. Does income distribution affect the market demand for goods? Specifically, fix a total income at M = mA + mB. For different combinations of mA and mB, are the market demands the same or not? Use an example to support your argument.
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