一道经济学原理的问题(英文)
ASIMOisasmall,closedeconomydefinedbythefollowingequations:
C=300+0.8(Y−T)−500r;I=400;T=100;G=80;
Inthemoneymarketwehave:
Therealmoneydemandfunction:Md/P=0.5Y−250r;
Moneysupplyisfixed:Ms=10000;
Inequilibrium,setP=10.
(a)FindequilibriumYandr.
(b)SupposethecentralbankofASIMOdecidestoperformanopenmarketpurchaseof250insecurities.Ifthereserverequirementratiois0.10,whatistheeffectofthisoperationinthemoneymarket?whatisthenewequilibriumYandWhathappenstotheADcurveinthiscase?
(c)Goingbacktotheoriginalsetofequationsinpart(a),supposethegovernmentofASIMOincreasesitsspendingby100.FindthenewequilibriumYandr.Thisisrelatedtothe“crowding-outeffect.”CalculateandExplainthecrowding-outeffect.Makesureyouranswerisspecifictothemodelinthisproblem.
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