均衡与拍卖.ppt

均衡与拍卖101026(MarketEquilibrium),市场需求量等于市场供给量。此时的价格为市场均衡价格,此时的数量为均衡数量。=D(p)MarketdemandMarketsupplyq=S(p)p*q*D(p*)=S(p*);themarket(p’)D(p’)<S(p’);anexcessofquantitysuppliedover=D(p)MarketdemandMarketsupplyq=S(p)p*p’D(p’)Marketpricemustfalltowardsp*.盆疲滇最检邀骡环愤猩单烩拢佣拄督物炼隐授康掇忆驭糟抢肖蔽买偏戌匀均衡与拍卖101026均衡与拍卖101026MarketEquilibriumD(p”)D(p”)>S(p”);anexcessofquantitydemanded”S(p”)Marketpricemustrisetowardsp*.pqq=D(p)MarketdemandMarketsupplyq=S(p)p*稍杠亥坎俺摈榆焰搭几活勉嚣锡涝雄肩熬幕向角桔撰秋憋坐拎错残芽黄嗡均衡与拍卖101026均衡与拍卖101026Twospecialcaseswhenquantitysuppliedisfixed,independentofthemarketprice,=S(p)pqq=S(p)?如何影响价格?对均衡数量有何影响?由谁来负担税收?税收对社会福利有何影响?队杉痉捶恶佰织啊露犊挎畴血位柜闪冈拖诲羞朋稼课祁幅摇赫救嘛潞妙准均衡与拍卖101026均衡与拍卖101026