作者afoh (afoh)
看板Grad-ProbAsk
标题[商管] [经济]-消费者均衡探讨
时间Thu Jan 7 15:29:38 2010
Janet consumers two commodities X and Y. Her utility function is
min{X+2Y, Y+2X}. She choose to buy 10 units of goods X and 20
units of good Y.The price of good X is 1. Which of the following is ture?
a. Icome is 40
b. Icome is 50
c. Icome is 30
d. Icome is 20
答案是D
解释为 X=10<Y=20 → U=Y+2X →M=20
但是我还是看不懂
因为X<Y 所以选出了U=Y+2X 的效用函数但是如何求出所得的勒?
希望有高手可以替我解答?
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 220.138.97.200
1F：推 hchs31705:有效用含数之後Ux/Uy=Px/Py 这样? 01/07 16:33
2F：推 ha18:若x+2y>y+2x会选y+2x，移项出来y>x合，另外一边会不合。 01/07 16:39