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1. ( ) :

Y = C + I + G + NX.

2. . , , , . :

= + .

, , = + .

.. , , , , :

C + I = S + C I = S.

(Sp), (Sg) (Sr):

S = Sp + Sg + Sr.

= (Y), (TR), % (N) (T) (C):

Sp = (Y + TR + N T) .

:

Sg = (T TR N) G.

, . , (BD):

BD = - Sg.

= , (IM), ():

Sr = IM X Sr = - NX = - Xn.

, , .

Sp + Sg + Sr = (Y+TR+N-T) C + (T-TR-N) G + (- NX) = Y C G NX;

S = I.

3. . . , 2 : . , .

Sg = - (ΔM + ΔB),

ΔM ;

ΔB - .

. , :

BD = - Sg BD = ΔM + ΔB.

:

Sp = I + ΔM + ΔBp.

: Sr = ΔBr.

: S = I.

, , (ΔB), (ΔB), (ΔBr), .. ΔB = ΔB + ΔBr.

- . () . () . . , . , , , . . . .

, .

, , , , 1.





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