= (18) 



IV. 



flp p (I xy— i -^- coC. fy I X dx fab .V — c~| 

 J A .v(/x/ Uid -^ = ^] 



=zfdpfdpfdp/Pi)p. 



V. 



/"■/)V/.vy — p /.v -+- fin. p / .V ^.v rab.vzncl 

 y A x{ix/ bd X — ij 



= f^pfOpfdprdpfVdp. 

 etc. 



O R D O N O N V S 

 Thcorcmatiim cx hac forma principali dcdu^lorum: 



/dx cof.p/.v fabjvron 1_ !"_!_: .. 



Sratuatiir A = .v" -f- (/-4-}) -f- •v""' ritqiic 

 z-nCitt.f^.if 



n 



atqiic hinc pcr diflrcrcntiationcm fcquentla prodcunt Thcorcmata: 



T. 



/fm. p l X d X I X 'ab .v — o~j 

 A 7~ Ud -^^ = ' J 





TT. 



fcnC. p 1 X 7)x n xf Tab X — o1 _ _ r)^ 



J A X La<l A- — i J — a 



r")rip 



III. 



