u = logC + y
where C and y denote the sub-utility function for differentiated brands and the consumption of Good Y , respectively.
在这个句子中，谢谢各位先

5# fallenangee
u = logC + y
where C and y denote the sub-utility function for differentiated brands and the consumption of Good Y , respectively

5# fallenangee
u = logC + y
where C and y denote the sub-utility function for differentiated brands and the
consumption of Good Y , respectively.

次效用函数~我也是刚查到的~