求一道经济学问题!
a.ThegeneralizeddemandfunctionforgoodAis:
QD=601-4PA-0.03M-12PB+15T+6Pe+1.5N
WhereQDisthequantitydemandedofgoodAeachmonth,PAisthepriceofgoodA,Misaveragehouseholdincome,PBisthepriceofarelatedgood,Tisaconsumertasteindexrangingfrom1to10,PeisthepriceconsumersexpecttopayNEXTmonthforgoodA,andNisthenumberofbuyersinthemarketforgoodA.
i)Doesthelawofdemandholdforthisgood?Whyorwhynot?
ii)IsgoodAnormalorinferior?Explain.
Aisinferiorgood.BecausequantityofAdemandeddecreasesasM(income)increasing.
iii)AregoodsAandBsubstitutesorcomplements?Explain.
XisnotsubstituteofY,becausequantityofXdemandeddecreasesaspriceofB(Pb)raising.
iv)ExplaintheeffectsofT,Pe,andN.Dothesignsofthegivencoefficientsmakesense?
v)GraphthedemandcurveforthisgoodwhenM=$25,000,PB=$40,T=6.5,Pe=$5.25,andN=2,000.
vi)Attheparametervaluesgivenabove,whatisthequantitydemandedwhenPA=$5?WhatistheConsumersurplusatthisprice?
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