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Шфа ^apiul

ЬфЫ , ivofton bùî ecfte tct J^çpotfjcfc, baß x eiitc Щипс* tion t>ott y ift/ unb baê jroeytc bet- ^9potï)cfe bc& y tinc Sïunction bon X ifl/ susc^ôct. S5ie (SiôGcn M unb N^ bcfinben ПФ ftuc beçbe im erften ©iffcccnttût ьщк\фг «nb menn man folfilict) biefeê 3>;ffereima( nid?t fcnnte, iinb Ысб einö b?r stvfijtcn t)îffccentintc öor Э(идеп ^âttCf j. Ф. boêjenige, roclcbc^ ouf y Шеанд b^t, fo f<fceint cS «lê rccim man fcacfluê n^t ^tiê oiibecc ableiten fônntc/ meit niфtô bûê ©iieb ânjeigen roùcbc/ п?е1фсе bie ©tctte

ООП

NdV

çinncfemen foU. Шап Vann abci* teicfet biefc ©cbmiccigs fcit ï)cbm, toenn man »on b« 3îcîûtion ©сЬгаиф mad)t, шШ îW^fФ«n ^^"«" 2)iffa'ciitiaI.-i5oefîicicnten bic in Uv einen biefee ^opotbcfcn nnb Jtt>lfфen i&ten coctefpons bitenben in bct anbccn .Çt^pot^efe ftatt fïnbet.

SRcnnt man y', y", y'" ... bie Süffecenttal'eocffî=» (icnten bec Sanction y. irnb x', x", x"' bicjenigen bec ^nnction X, fo bûbcH Kiiv (9îc.9 unb lo)

dy c= y'dx 1 r dx'= x'dy

dy' r=: y'' dx ^ HHb ^ dx' =: x^'dy dy'' = y"'dxj' [.dx" = xi"dy

gûc bic cifle Ocbnune Ь^Ьеп wit f*on gcfunbeti

М^^ + N. =0 I . }Ш'+ N АО