eodem modo procedendo habebitur 



- /•____ _i/ (l -"'' 3) - 1 - ^Atang.i___lL__). 



•V ( i__ r f s r 1/3 ,/3 



atque in locum r reftituto eius valore § prodit 



/l__-__-I/[f(i+u')-u]-4-Atang.__-__i__) 



•//(i+u 3 ) " V3 ^ 3 



Hinc 



3 



f du r du 7 y (i -f-u 3 ) — i 



^ _y(i-f-0 J y(i + u 3 ) ' u[^(i-m_ 3 ) — u] 



A tang. 1^ . — _ A tang ip _ b 



l/3 /3 l/3 & u/3 



Cum vero fit u =_ *=*, etj = /3+ ./i4_3-~d fiet 



u YS — Y{4x3—x) -/3 — z et 



-/3 -t- -/(4X3 — I) V3-+-Z 



3 3 



V/ /j V j.3\ — 2x1/ 3 — - ysd + zz)./. 



furrogatis his valoribus refultabit negle&o fa&ore nurnerico 



r d % _ 1 j [— i-^-y 2(i-+z_)]/ 3 — __i 7/3— g 



./ / \ 3 // *7""?/- r 3 / / \. / 2 //3-^Z 



(3— 55 _) ]/(l+Zz) [-I+]/2(lf2.)]/3 + Z 



H- _J_ A tang. L___i_fi__-__ L_» _______ 



3 



1 a *- [i+]/(i+__)]l/3 — Z 

 — -t- A tar_£ . - — . ■ ■ . - — ■ '-4- _ 



/3 b (/3— 2) /3 



Noua AUa Acad. Imp. Scienl. Tom. X. R Hinc 



