U(C)=(C^a-1)/(a-1),求2阶导数

问题描述:

U(C)=(C^a-1)/(a-1),求2阶导数

一阶导数为aC^(a-1)/(a-1),二阶导数为a(a-1)C^(a-2)/(a-1)=aC^(a-2)