δU
δx1
U (x1 , x2 )
δU
δx2
M RS(x1 , x2 )
M RS(2, 3)
U () = x1 x2
U () = (x1 )3 (x2 )5
U () = 3lnx1 + 5lnx2
x1
x2
(x1 , x2 )
(2, 3)
ln(x)
1/x
U () = (x1 )3 (x2 )5
(2, 3)
0.00001
ln(x)
ln(x y ) =
αlnx + βlny
(x1 )
(x2
U (x1 , x2 ) = (x1 )3 (x2 )1
(x1 , x2
(1, 1)
(1, 1)
(x1 )
(x2 )
(5, 1) (10, 10)
(15, 4)
1:2
(x1 )
(x2 )
(x1 , x2 )
p1 =
p2 =
p1 =
p1 =
p2 =
p2 =