3、厂商的收益曲线 ARE TR/QEP D MRE dtRidQ=p D Po ★三线合 >即:AR=MR=P Q8 3、厂商的收益曲线 ➢ AR = TR/Q = P ➢ MR = dTR/dQ = p ➢ 即：AR = MR = P O Q P P0 D 三线合一