500 Methodus inveniend: Lineas Curvas, &e. tS 


_ Exempl. 2. Sit s=~ fs =» pofita fa erit per theorema 
a ao GR 

adR dR dp 
= bell SSS ‘g 
FoR oe = a et £ afta integratione See zt 
= Sos C=e, habetti VJi-p === = et R= 


dbo ae Per theorema I. dv = " qua conftat curvam 
a Woy 
2 
éfle Tractoriam. 


