--I4€ ) 18 ( ^h^ 



ita vt habeamus 



X d xlx__ y uh X "^ 

 ■XX 



xi» 



§. 29. Quoniam in hac formula integrale / 



algebraice cxhiberi poteH: , cum fit ~ i — V i — jf jr, valor 

 quacfitus etiam per redudiones confuctas erui potefl: , 

 cum fit 



f^A^^ — (i -y"r^^)/.v-/^ ( I -yi-A:7} 



Vi — X X ^ ' •' X \ • 



pofitoque X — \ erit 



/«i-l^=-/^-(i_yi-^^) 



V ' — t X * 



ad quam formam intcgrandam fiat i — y i — jc.v~3;, vnde 

 colhgitur .V A' zz: 2 s — s 5; , ergo 2/A*ir:/z-|-/( 1 — z) 

 ficque fiet ^ — ^Li^l^, quibus valoribus fubllitutis erit 



+/^ f I - >^ ^ ^~) = + /'-^^-1---^ 

 qui ergo valor erit ~ C — 2; — / (2 — s). Quia igitur po- 

 fito x — o fit s =: o, conflans erit C =: 4- / 2 ; fado igi- 

 tur Jf=:i, quia tum fit 5; — i , iftc valor intcgralis erit 

 /2 — 1, prorfus \t ante. 



§. 30. Eundcm Talorcm fuppcditat thcorcma prius 

 fupra allatum, quo erat p — n~ 2; indc enim Itatim fit 

 r xd^_ — f _ xjix ^^j^jg autem Tidimus effe f^-i—l2 

 -' ^7=r^x ^ / + '= ^ '■+-* 



ita vt etiam hinc prodeat valor quaefitus /2—1. 



Exempliim III. quo p — ^- 



%. 31. Hoc igitur cafu acquatio in thtorcmatc ge- 

 nerali allata hanc induet formam : 



f txd xlx r X X dx r xrd x 



•^ V ' — X :c •' V 1 — XX ' "^ • H- rf * 



Pcr reducliones autcm notilf.mas conftat effe 



/x X d X r ah X ZZ. o i i •tt 

 V I ^ X X 1- Orf K — ' J 5 • 3 



at 



