Question

微观经济学题某人每月收入120元,全部用于购买X和Y商品,总效用函数是U=XY,X的价格是2元,Y的价格是3元.

Answer 1

1)

2X+3Y=120

Y=40-2X/3

U=XY=X(40-2X/3)

=-2X^2/3+40X

=-2/3(X-30)^2+600

X=30,Y=20

U=600

2)

U=(X+1)(Y+1)-XY

=X+Y+1

U=XY

X=0,Y=0

U=0

0