at vero problema particulare prius pro hoc cafu pracbet 

 p21i}^~-lf^j^. Cum autem fit 

 f^JL — l-'Jz, erit abfolute 



r x~ dxl X r ab x— o -] ■ / t 7 o ^ 



J y ( _ ^4 ) Ladx — 'J— 5V^ '^/ 



at vcro hic cafus congruit cum fupra §. 28. tracflato. Si 

 enim hic ponamus -v x —j , quo fadlo termini integra,- 

 tionis manent ^1:1:0 et jrzi, erit Ix-Uj et xdx-'^dy:, 

 quibus valoribus fubftitutis noftra aequatio abibit in hanc 

 formam : lj.2±lll — _ _; ( i _ / « j fiue /--/i> - = / 2 - i.,, 



prorfus vt fupra. 



§. 4.9. Alterum vero theorema particulare ad praei^ 

 fentem calum accommodatum dabit 

 r xdxlx_ _^ r_^dx_ ^ 



f.J^A^ — lV 1 -{-xx=iU 2. 



J z-h X X ^ 



ita vt habeamus 



/x dxlx r ab X ^^ o i '"'/<» 

 y ( , _ ;^) L ad ;c — I J s * 2. 



Quodfi \ero hic vt ante flatuamus xx^y, obtinebitur 

 f^^3^—-^j2.,(im eft cafus fupra §. 26. tradatus. His 

 duobus cafibus exponens p erat numerus par , vnde cafus 

 impares euokii conueniet. 



Exemplum I. quo p = i. 



§. 50. Hoc igitur cafu formula integralis poftrema 

 fiet frTTx--^ tang..v, ita vt pofito xzzi prodeat 5- tum vero 

 aequatio noftra erit , f dxix _ _tt r — dx__ inteera- 



1 ' •'V(>-x*] +•' V(i-=c+) ' ^"'•'-5^" 



libus fcihcet ab jr = o ad j»r = i extenfis ; vbi formula 

 fvjT^xT) arcum curuae clafticae redangulae exprimit, ideo- 

 que ablblute exhiberi nequit. 



D 2. Exem- 



