问题标题：
ThedemandforgoodXisgivenbyQXd=6,000-(1/2)PX-PY+9PZ+(1/10)MResearchshowsthatthepricesofrelatedgoodsaregivenbyPy=$6,500andPz=$100,whiletheaverageincomeofindividualsconsumingthisproductisM=$70,000.a.Indicate
问题描述：
ThedemandforgoodXisgivenby
QXd=6,000-(1/2)PX-PY+9PZ+(1/10)M
ResearchshowsthatthepricesofrelatedgoodsaregivenbyPy=$6,500andPz=$100,whiletheaverageincomeofindividualsconsumingthisproductisM=$70,000.
a.IndicatewhethergoodsYandZaresubstitutesorcomplementsforgoodX.
GoodYis:neithercomplementnorsubstitude/acomplement/asubstitude?
GoodZis:neithercomplementnorsubstitude/acomplement/asubstitude?
b.IsXaninferiororanormalgood?
GoodXis:neithercomplementnorsubstitude/acomplement/asubstitude
c.HowmanyunitsofgoodXwillbepurchasedwhenPx=$5,230?
d.DeterminethedemandfunctionandinversedemandfunctionforgoodX.GraphthedemandcurveforgoodX.
Demandfunction:__-__PX
Inversedemandfunction:PX=__-__QXd
陈丽春回答：
这道题有四问,关于a,b,c比较有点把握,最后一个不太确定.我先把前三个发给你看看：a,根据题目中给的公式,如果y的价格上升,则X的需求量下降,因此商品Y是X的替代产品.当Z价格上升时,X的需求量上升,因此Z是X的complement...
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