FJCTORIBFS ORTIS. 15 



U+H) f (f^ ^g-^'1 (f-^^g)^ (_f±M)'T . 



etc. Vel paucis miitatis, \t Eidores infinitefimi fiant 

 =z I , et exprefiio vbi libuerit abrumpi queat 



erit ? cr :? ' , i-p ' 



expreffionis lex , qua fadores progrediuntur , fponte elucet. 



§.22. Eiusdem autem termini intermedii z valor 

 ope termini generaiis huius leriei exprimi poteft,fiet enim^— 



_g_^dx[-Jx) ^__^ Q^^.^^^ p^ ponatur/^.v(-/;c)¥= 



-^(1.^.3 ^^(f+i^ff-Kx^d^H-i^.-.^f+O 



Jdx{x-x') hjdx {x^-^x^f^Jdxix'' x*)-q... Jdx^x'^-'-^') I 

 mVP: atque xzny^^ quo fit Jx^-^dx^x-x) i zzgj^'^^"^/ 



