- :
1. ( )
: Y-r X-M/P. Ls. M_/P_. Ld ()
2. ( )
: Y-r X-M/P. r_ Y Ls. Ld () .
3.
: Y-r X-M/P Ld , Ls .
.
1) ,
2) .
.
:
: , ,
: ,
: , , .
IS-LM.
- . - . IS - .. .
LM -. . .
. r 2 .
IS-LM (r) (Y) .
: Y=C+I+G+Xn C=a+b*(Y-T) I=t-dR Xn=g-mY-nR M/P=kY-LR
: Y, C,I, Xn, R.
: G, M, t()
IS . , Y R, , - , - .
IS I=S. IS :
: 3 . 1 2 . - Y-r X-I. ( ) Y-r X-Y. Y-E X-Y. Y r1 r2. .
I () . r1 r2. X I(r2) I(r1) .
X Y2 Y1. Y2<Y1. . r2-y2 r1-y1 Is.
45. y2 y1. E2 E1. ()
|
|
r1 r2 I(r1) I(r2), 1 2.
IS - , .. % . IS .
32. . IS. IS - .. .
IS R, - , IS - . IS G T , - IS .
: 2 . : Y-E X-Y
Y-R X-Y. Y r const . X Y1 Y1 Y1<Y2. r const Y1 Y2 ( ) IS1 IS2
. (Y=E) 45 Y1 Y2. E1 E2 . - dxG
G
G 1 2 R, dG dxY dxG/1-b => IS dxY
IS R . IS - (). IS .
IS , t( )
IS .
IS : - I n R
-
-
-
LM.
LM -. . .
- , R Y - . LM .
: . : Y-r X-M/P,
: Y-r X-Y. Y r1 r2. r2>r1. X M_/P_. r1,r2 M_/P_ 2 L(r,Y1) L(r,Y2) . X Y1 Y2. Y2>Y1. r1 r2 Y1 Y2 LM
L(r,Y1) - r 1. L(r,Y2) r 2
LM % , r LM .
LM.
LM -. . .
- , R Y - . .
|
|
LM % .
LM .
LM .
: 2 . . : Y-r X-M/P
Y-r X-Y. Y r1 r2 r2>r1 . (M/P)2 (M/P)1 (M/P)2 . r M/P . X Y . 2 r1 Y r2 Y. 2
LM LM
R . Ms =>R =>I
LM :
%