学校:国立暨南国立大学 教师:赖法才 科目:个体经济学 题目:Roger's utility function is U = min{a1,a2}min{b1,b2}, where a1 and a2 are the number of piano lessons he consumes this year and next and b1 and b2 are the number of ice skating lessons he consumes this year and next. The price of piano lessons is ＄10 each and the price of ice skating is ＄4 each. The prices won't change, but the interest rate is 7%. If Roger consumes 20 piano lessons this year, how many ice-skating lessons will he consume next year? 我的想法: 这题我是觉得它的效用是两个完全互补所形成的一个cobb-dogulas效用 函数。我切入的角度是从跨期预算限制式求解，但是卡在不知道如何求 所得，也就是endowment的价值总额。拜托各位指点一下 谢谢。 --

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