PNG  IHDR]4*0PLTE@@@ftRNSS pHYsetEXtTitleInftyEditor MathImageytEXtAuthorAdministrator*ftEXtDescription $\displaystyle f_{r+1}^{\prime}(1)=1+\frac{m-1}{m}f_{r}^{\prime}(1), f_{r}^{\prime}(1)=1$.tEXtCopyrightInftyProject@$tEXtCreation Time r'rr'rr IDATx 8@y@8d/o{57MU&wYˬ{^f~XygS/?E#V=oLy=m^zkby >;{3DļÎ!(3IuS?>VS4DxC3̠%Ay^Mt\W K'{-EKxGC;\'$3Hl^o9/aI0^Ic",üސx^8-'Axڻ`(? )07bђ?D*d-rmI2V,? !I0^VW+< $ݥ`[ '׳=ٿ9^. 9IENDB`