●考察价格水平变化过程 令z,=1P,则n(-m2)=mBh,'(E+,m2)被改写 uI'(r-m ,)=Bh,A'(E+hm u'cr-M P M '(E+ I'(r-MZ, =B2+I'(E+MZ, (-Mz,)2,=(E+M)2 分析价格变动的提供曲线(Off 对nY-Mz)z,=m(E+A,)z,进行全微分,得 (-M,)d,+21(D(-ME,kdZ1=O'(E+M2)dn+Z1BM(E+Mzn)Zn (-Mz,)-z,"(Y-Mz,) dz, Bu'(E+MZ, 1)+Z,BMhur(E+MZ, 1)