Opuscula. 169 
X : ergo erit : : : — -f- / : — : : + 4 ^ : : igitur 
r= \/ CC-h 4 />. j" 5 five — j , & ^ j . Elimi- 
netur d s ah xquatione , & refultabit — d V ~ 
_ ifii^ . & pofito conftante // T fiet^— i^li^ 
~ . . Multiplicemus per 2 /u ^ ut fit z ^ 
i p d V 
mbix im h(^'^ d j_z ^ p-^^ z m h f^'' ^2 ^ mbjt 
=r ut tandem ori atur z, — — , dV^ ~ — d d z , 
2 2 f « 
Ad integrandam hanc scquationem duplici ilia methodo 
utar , qua ufus fum in priore diiquifitione . Prima metho- 
dus 5 pofito finu toto — r , ftatim prsebet z — ^ — A 
, C c . V-\- 5 . S c . r. Ad alteram methodum multiplica per 
d% , ut fit z — — .dzdV^— — dz d dz. Integra non 
omifla necsffaria conftante z"- — — , d V^ — E d V"- — r^d z\ 
five — 7 ~ dV. Prima sequationis pars depen- 
det a circuli quadratura, quod tibi conftabit , fi in hunc 
modum difponas • . ~ - rz ^z: ~ dV , Ut formulam 
integrem per circulum , cujus radius =: r, pono E H- 
z=z N"- , unde patet conftantem N determinari per £, & 
viciffim : poftea formulam ita diftribuo r 
N 
dz 
1/ ' 
V rr r- . z • 
1 
=z dV. Integro .z ^ S c. A 4- T, five z — —7 
Tom.Vl. Y = 
