po VARIA GENERA 



Ybi inembrum penultimum e(l fundio cognita ipfias 

 z, vitimum autem iubdituto loco z valore ^ , abic ia 



quare hinc colligimus 

 quum autem fit 



J — (w v)" erir d szz\^nf v"*- dv 



d s d V 

 et ■ — s 



•'*• avi-t~n — n' rn -f-g ni -4- rt » 



cx quo colligitur formulae noftrae propofitae multi- 

 plica^orem efle 



''-^y-Px ^J^j^px 



^"♦-'*-i_T — o m-4-a I ^ 



^'ISli- +1 (^ P"" + ^ .V'') ^"^ "^ 



31. Hadenus eiusmodi formulas fumus con- 

 templati , quae cum per fe funt integrabiles , tum 

 \ero doas tautjm variabiies p et a: contineant; fimi- 

 li aiitem modo iftas formulas tradare licebit,quae tan- 

 tum has duas variabilcs p tx. y inuoluant , vbi qui- 

 dem affumimuSjhas formulas per fe effe integrabiles. 



Exemplum 5. 



Propofita formula : 

 p^^' dp-^pj""-" dpzzdv , 



eius 



