, rE YE.
.1
. . . ∆G, . , , . IS , IS1. rE , E2. Y2-YE = ∆G/(1-mpc). % . ↗ . D S, %- . ↗ . ↗ % , %- rE . D . % ↗ r1, . E1, () Y1. , Y1-YE. , IS-LM , YE Y1, ↗%- rE r1. , , % ↘ : , .. . : IS . () , % ↘.
.2
.3
. 2. ↗ Y1-YE, (Y2-Y1). , . 3 IS , LM . , Y2 -Y1 , Y1-YE, .. . , , IS LM. IS . LM D % . : , , %, mpc , D %- . , , , D %- , , . LM . IS IS1. YE, .. =0. .