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(aggregate demand AD) (, , ) . :

, .. (consumption demand);

, .. I (investment demand);

, .. G (government spending);

, .. Xn (demand for net export).

:

AD = C + I + G + Xn.

, .. , .

, , , .

:

C = Ca + bY,

Ca ( Y ); b .

APC ( . averagepropensitytoconsume) , .

MPC1 ( . marginalpropensitytoconsume) .

, APS , . , , , .

Yv.

C = Ca + bYv

Yv = Y tY = Y(1 t),

t .

, , , , , .. . .

C(i) = Ca+ Yv ai,

i 1; a ( ( ), ).

Y = C + S, .

.

:

S = Ca + sYv,

s MPS ( .

marginal propensity to save).

, b + s = 1, .. Y = C + S => ∆Y = ∆C + ∆S. :

; b = 1 s;s = 1 b

S(i) = Ca+ ai.

, , . , . .

, :

1) ;

2) ;

3) ;

4) ;

5) ;

6) .

, , . , , , , .

, , , .





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