边际效用MU1=3(x2)^2 MU2=6x1(x2)
MU1:p1=MU2:p2
3(x2)^2 :20=6x1(x2):30
12x1=9x2 x1=0.75x2
20x1+30x2=540
x1=9
x2=12
总效用U=3X9X12X12=3888
边际效用MU1=3(x2)^2 MU2=6x1(x2)
MU1:p1=MU2:p2
3(x2)^2 :20=6x1(x2):30
12x1=9x2 x1=0.75x2
20x1+30x2=540
x1=9
x2=12
总效用U=3X9X12X12=3888