65全球视角下的宏观经济学答案

Ch2P6247894NFPGNP=GDP+NFPNFP0GDP7abcd89PV=50/(1+10%)+50/(1+10%)2+50/(1+10%)3=124$PV’=50/(1+15%)+50/(1+15%)2+50/(1+15%)3=114$PV’PV,6aP1Q1+P2Q2+P3Q3=GDP=500bw1w2w3w1=P1Q1/GNPw1=P2Q2/GNPw3=P3Q3/GNPPIPI=w1*P1'/P1+w2*P2'/P2+w3*P3'/P3'100%cPI'=0.2*6/5+0.5*12/10+0.3*17/15=0.24+0.6+0.34=1.1414%GDP'=P1'Q1'+P2'Q2'+P3'Q3'=126+324+187=637GDP''=GDP'/PI'=558.8558.8-500/500=11.75%Ch3P110234682ab3abcd4aL=20/3,W/P=5/3;Qs=80BCK=3Q=12LMPL=12P=W/MPL=1/46aC+I+G=(10-5P)+20+15=Qs=5+PP=20/3Q=35/3bG=25P=55/6Q=85/6cQs=10P=7Q=10P=9Q=108QsQdQd’QsQd’Qd7780PASASADADQQfCh4P16723471021233aC2/Q2200EC1/Q1100bp1314.9YP=148cp1234.6C=148d712abc41524-7b108CCER2000Ch5P2152346892J=I-dKJ1=800-0.1*10000=-200K2=K1+J1=9800J2=I2-dK2=1500-0.1*9800=7203MPK=r+daMPK=K-0.5=r=0.11K2=82.6I=K2-(1-d)K1=1.6bMPK=K-0.5=r+d=0.21K2=22.6I=K2-(1-d)K1=-51.34MPKr+dMPK=r+d6ab8qq95chap.6p.265127891AA261SCASrrSCAIOISOCA2SCArrISCAOISOCA7ab------------c8aI50rS=4rI=SI=S=40r=10%CA=SI0br/=8%S/=32I/=42CA/=S/I/=10r//=12%S//=48I//=38CA//=S//I//10cI70raba/)r=14%I=S=56CA=0b/)r/=8%r//=12%S/=32S//=48I/=62I//=58CA/=30CA//=109arQQrCC++=++112121128))(1(1122=−++=CQrQCb20111−=−=CQTB22222=−=CQTBc20111−=−=CQCA2012=−=CACAMacroeconomicsinaglobalview83.108.102.011.01ˆ11)1(11≈++=++=+=++PiPiPrA%5%8==∴BArrA2)%5%202.0108.011.01%8ˆ1===−++=⇒=+BArrP3)AB411.91.01%10*100=+27idiQdQibQibQdPMPMdibQPMPMDDD222)2(21)()2)(21(221*0−====15%2.5%210%5%310%10%)(1.11)()2()2(2112121QPMQPMQibQibQQPMDDD===+8.9.212==bQiMPQvP415—P4164a.)()()(1111**−−−−−+−+−=−ccccgcgchhLLBBEDDMM,)()()(111−−−−++−=−ccgcgchhLLTBEDDMM(P388),,,A8,8,b.182525.0,2.0==ddcra.78.211≈++=ddrcφb.72.078.22===⋅=φδδδφδMMMMhh0.72c.1.0=dr56.06.326.325.01.025.01==≈++=dMδφ8.a.P400)(1gpgpDD−−)(1gcgcDD−−c.)()()(1111**−−−−−+−+−=−ccccgcgchhLLBBEDDMM9.a.2%,20,500,)(21,2500=⇒=====PMMiYPiYMMDSDsb.1PMSMDE250020M25001250DMp=2MDIMSE25000.20MDMi500=3QMSMDE250050002500MYMD5=c10002)1.02)42)5000========PiMYiiiMYPiiiYiMPiMMDDDSD10./dddcrc++=1φMSi0M10P4714.a.**11*PPPPEEEPPδδδ−==−−b.0***−==PdPPdPedePEPee5.aEEEii−+=+1*%10%7250250255%5=−+=ib.5.2621)1(*1=++=+iEiE6.a.M/PBB*b.BB*c.BB*d.eE7a.BM/Pb.,Ec.9.112a.)()(**1DEFPBBEcc=−−−2500)(**1−=−=−−DEFEPBBcc2500so-calledR0timebQVM/P4.a*EPP=0%2%2)()()()()()(****111=+−=+−=−⇒=−−−−−−GDPPMGDPDEFGDPPBBEDEFPBBEMMccccδb⇒=∴=∴=−=−=−−−−0ˆ%2%21111PPPGDPPMPMGDPPMMDEFQ5.a%6.31ˆˆ1ˆ%64=⇒⋅+====⇒=PPMPPGDPDEFGDPVQPMPQMVb%6.28%3%6.31ˆˆˆ*=−=−=PPE8.QPMMMM%2.0))((11=−−−43=⇒=PMPQM%6.011=−−−MMM%6.0ˆ1111=−=−=−−−−MMMPPPP10Macroeconomicsinaglobalview125a)ISLMb)ISLMc)ISLMd)LMIS6a)IS1LM23LMb)123c)d)IS1237a.IS355.0104.020)(8.0+−=⇒+−+−=⇒++=QiiTQQGICQ511=−c41=−ccb.LM255.0250)5.0(−=∴==−⇒=QiPPiQMMSDQc==⇒−=+−=605255.0355.0eeQiQiQid355.0+−=QiPiQ)5.0(50−=3550−=QPe1P=2==⇒=−+−+−=655.7502)5.0(124.020)20(8.0eeQiiQiQQ2Q=60Q=60==⇒=−+−=5.21050)5.0(405.0eePiPiQQi8135iISLM’LMIS’CABOQ,IS,B,B,,,C,,,,,,LMISLMCMCISIS’,LMLM’,AC,,6PEPe*=ISLMLM7a.ISLMb.,,,IS,,,,,,LM,LM’,CISIS’LMLM’BACc.,,ISLM,;,.,,LMLM’,9a.(1)ISIS’LMLM’BACCMOISBLMCAC2ISLMCMb.,(1)ISLMLM’ABOAB,B,,,,,LM2LMBLM142a)LMISb)IS3LMLM’LM’CMB,IS,1)ISIS’IS,IS)IS’IS2)ISIS’()ISIS’LM’ISLMIS’BACM6AISISBISIS’’IS’LMISIS’LMBCM’DCM’ACMCCMOOISIS’,,,,,IS,,CMCM’,,B,,(),ISIS’,D,,,,,9.,ISIS’LMLM’ABO()(),ISLM,CM,,,Macroeconomicsinaglobalview:151.a.b.c.d.4.)ˆˆ()ˆˆ()ˆˆ(11111111111efeneffPPjQQPPhUUPPwpwpPW+++++++++++−+=−−=−−=(1)fnfeQQUUwpPWPP1111111%5ˆˆ+++++++===⇒==2fnfeQQUUwpPWPP⇒+++++,,ˆˆ111113fnfeQQUUwpPWPP⇒+++++,,ˆˆ111115Pa.CABfQQ(663)ABb.7.tradeoff8BABBAAMacroeconomicsinaglobalview:171.)4.(1)t-121−−−bQbQ;tt121−−−=bQbQQs,1−=bQQu;0212IbQbQQ+−−−(page756),0I021)(IQQbI+−=−−,1−=aQQCIGC,GIbQQbaQ++−+=−−021)(,G(2)RBC)6.8.tradeoffMacroeconomicsinaglobalview:185.n,n7./8109.1122211510pxpx−=−=4a22222211111125552101010xMRxppxxMRxppx−=⇒−=⇒−=−=⇒−=⇒−=MR=MC17ˆ,3ˆ,4210111===−pxx25.4ˆ,5.0ˆ,425222===−pxxbxMRxppxp210,10,10:5−=−=−=≥xMRxppxxxp−=−=−=+=5.7;25.7,215:521MR=MC,5p25.5ˆ,5.3ˆ,45.7===−pxx5xMR210−=7ˆ,3ˆ,421011===−pxx2AB0******AB3***3019112**261881*15147abcdbcaA3***B2**=19+10=29b2**p=18,20=π,CS=83***p=19,19=π;1*p=14,14=π;(c)3***1*1,25,29)1415(30,1431===−−==CSppπ3***2*21,22)1826(30,1832==−−==πpp2**1*24,25)1415(26,1421==−−==πppdbcCSA81CSB0020252826