二、总需求曲线的推导 s=-1000+0.5y j=2500-240r =s0.5y+240r=3500 M/P=1000/P L=0.5y-260r m=L0.5y-260r=1000/P 0.5y+240r=3500 0.5y-260r=1000/P y=3640+960P二、总需求曲线的推导 s=－1000+0.5y i=2500－240r i=s 0.5y + 240r = 3500 M/P=1000/P L= 0.5y －260r m=L 0.5y －260r = 1000/P 0.5y + 240r = 3500 0.5y－260r =1000/P y= 3640 + 960/P