莎伦有如下的效用函数:式中,X是她对棒棒糖的需求量,PX=1美元,Y是她对浓咖啡的需求量,PY⌘
莎伦有如下的效用函数:
式中,X是她对棒棒糖的需求量,PX=1美元,Y是她对浓咖啡的需求量,PY=3美元。
(1)推导莎伦对棒棒糖和浓咖啡的需求函数。
(2)假定其收入I为100美元,莎伦会消费多少棒棒糖,多少浓咖啡?
(3)收入的边际效应为多少?
Sharon has the following utility function:
where X is her consumption of candy bars, with price PX= $1, and Y is her consumption of espressos, with PY= $3.
a. Derive Sharon ' s demand for candy bars and espressos.
b. Assume that her income I= $ 100. How many candy bars and how many espressos will Sharon consume?
c. What is the marginal utility of income?