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. 1937 . . . . . . . , -., - . . IS-LM 2- . ( IS) ( LM ). IS . , . . . LM . . % (r), . , , . . IS-LM ., . , , . , . -. : I = f(r).

IS. : () (). , . ( r1 r2) ( I (r1) I (r2) DI. . . r1 r2, . , , Y1 Y2. . . , %. IS (), . (Y1r1) (Y2r2). IS , .. - . IS . , .. %- , . IS , LM. . Ms , . . ( ) % ( ): Md = L (r, Y). . . % - . Y1 Y2 L1 (r1Y1) L2 (r2Y2), r1 r2. LM % . IS LM , (r1Y1) (r2Y2). .. %- , (L) (M). LM . . . . LM (L>M), . L - , (L>M).

IS LM . , . (.) (rE) (YE), . () , . . , % , , , , . . IS LM . . IS - , .. . . LM - . ., IS , , . . . - , . . . , . % . , ., . . .





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